Space travel and habitats

No prize. It is an idea about what travellers would feel, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. They are wild birds, creatures and not a technology.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is an early idea about what travellers would feel, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. Carriers and other firms working in space buy ships, and since a second yard could build the same craft the established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Breathable air is essential aboard, but this is a fitting inside a craft or suit, not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Breathable air is essential aboard, but this is a fitting inside a craft or suit, not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Flinging payloads to space without rockets would change the cost of the whole launch industry.

Who is paid. Firms with cargo to launch pay, and since others could build such a track or gun the gain goes to those who already own launch sites and power.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Fine food on a voyage is a pleasant extra for travellers, a convenience.

Who is paid. Travellers pay for their meals, assumed here to be on top of the fare, and any good cook could offer the same.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A site built to send craft to space is what the whole launch industry runs from.

Who is paid. Firms with craft to launch pay to use it, and since others could build one the gain goes to those who already own good sites.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. The promise is travel with no fuel at all, which would change the cost of space transport; the real sails so far push only small test craft.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A sealed shell for a few travellers is the bare cabin; the prize of the trip lies with the gun that hurls it.

Who is paid. Whoever runs the gun would buy it, assumed here to be a launch firm, and existing spacecraft builders could all make something so simple.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Thrusters that slow a craft are a necessary part of a spacecraft, not a product by themselves.

Who is paid. Ship operators pay for them within the craft, and established engine makers supply them since they are easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of landing, not a product; the capsule and the recovery ships are judged under their own entries.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust or landing, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names what space does to the body, a condition and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Flinging or pushing payloads to space without big rockets would change the cost of the whole launch industry.

Who is paid. Firms with cargo to launch pay, and since others could build such works the gain goes to those who already own launch sites and power.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A ground beacon for ships in space is a minor aid to navigation.

Who is paid. A beacon serves all ships and none can be charged, so a government pays, and a bright light is something many firms could build.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a necessary fitting on any crewed craft, but only a part of the ship.

Who is paid. Ship operators pay for it within the craft, and shipbuilders make it themselves since nothing stops others copying it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Flinging payloads to space without rockets would change the cost of the whole launch industry.

Who is paid. Firms with cargo to launch pay, and since others could build such a track or gun the gain goes to those who already own launch sites and power.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It adds to knowledge of the sky but yields nothing to sell, so its worth is limited to science.

Who is paid. Nobody could be charged for what it learns, so a government pays the instrument and probe builders that already hold such contracts.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a term for the planet a people came from, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. Carriers and other firms working in space buy ships, and since a second yard could build the same craft the established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Listening to signals from the Sun adds to knowledge, with nothing to sell from it.

Who is paid. Nobody could be charged for the findings, so a government pays the instrument and probe builders that already hold such contracts.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Metal and other materials from space rocks would be an industry of its own and could change the cost of raw materials.

Who is paid. Factories and builders buy the output, and since mining methods are easy to copy the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It keeps a spacewalker attached to the ship, a simple safety item for a few workers.

Who is paid. Space operators buy it for crews, and it is simple hardware that many workshops could make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of working outside a ship, done with the suit and tether judged elsewhere, not a product of its own.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a term for the planet a people came from, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names what space does to the body, a condition and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a part of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It keeps a person alive and able to work outside, essential gear but only for the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few established makers of suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working engine for travel between worlds sets the cost of every voyage it powers.

Who is paid. Ship operators pay, and once the engine was shown to work others could build it, so established engine builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a necessary fitting on any crewed craft, but only a part of the ship.

Who is paid. Ship operators pay for it within the craft, and shipbuilders make it themselves since nothing stops others copying it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Clearing dangerous rocks keeps space routes safe, a useful service but only a support to the traffic.

Who is paid. No single ship could be charged for a clear route, so a government pays, and operators that already hold armed ships and such contracts do the work.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Warning of rocks ahead keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a term for the planet a people came from, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A spaceship a private person can own and fly would open a new kind of private travel.

Who is paid. Private owners buy the ship; the description says only a private party, assumed here to be people and not firms, and since the design could be copied the established builders of craft collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A marker in space for navigators is a minor aid to navigation.

Who is paid. A beacon serves all ships and none can be charged, so a government pays, and a simple transmitter or light is something many firms could build.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Moving a whole star would decide the fate of every world around it, which is assumed here to mean saving or resettling whole peoples.

Who is paid. Only a government could fund work on that scale, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A panel for plotting courses between stars is essential to the voyage but is an instrument within the ship.

Who is paid. Ship operators buy it as part of the craft, and the established makers of flight instruments supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Safe cooking aboard ship is a comfort for crews, a small fitting.

Who is paid. Ship operators pay for it within the craft, and appliance and galley makers could all supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Steering whole rocks to where they are wanted would serve mining and building in space, part of an industry of its own.

Who is paid. Mining and building firms are assumed to pay, and fixing engines to a rock is easy to copy, so the firms that already own ships and engines collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Using a handgun's kick to move while weightless is a makeshift version of a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Steering whole rocks to where they are wanted would serve mining and building in space, part of an industry of its own.

Who is paid. Mining and building firms are assumed to pay, and fixing engines to a rock is easy to copy, so the firms that already own ships and engines collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Weight underfoot on any ship would be fitted almost everywhere people live in space, assuming here a generator and not a spinning hull.

Who is paid. Ship and station operators buy it, and once it worked other makers could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Pushing craft with a beam of light from a far-off station would let ships fly without carrying their own fuel.

Who is paid. Ship operators pay for the push, and since others could build beam stations the gain goes to those who already own the sites and power plants.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a name for our own star, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Travel that needs no fuel would cut the cost of moving ships and cargo across space.

Who is paid. Ship operators buy the sail as their engine, and a thin reflecting sheet is something other makers could copy, so established ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Carrying people between worlds would be a transport industry of its own; it changes life for those who go, not for most people.

Who is paid. Carriers buy the ships and sell the passage, assumed here as with other ships, and since ships can be copied the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Checking that suits hold before crews rely on them is a needed routine, part of making and keeping suits.

Who is paid. Suit makers and space operators pay for the test gear, and the established makers of suits and test equipment supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A floating launch base is a useful choice of site, not a new industry.

Who is paid. Launch firms pay for it, and builders of ships and offshore platforms could all make it, so those established yards collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A solo scouting craft serves prospectors, a niche within space mining.

Who is paid. Prospectors and mining firms buy it, and established small-craft builders could all make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: a trained crew member is needed on every voyage but is a small part of its cost.

Who is paid. Ship operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A vessel the size of a small world carrying a whole society is an enormous building project.

Who is paid. Only a government could fund it, and the big shipbuilders and contractors already trusted with such work would be paid.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a handy detail of a helmet, a convenience for the few people who wear spacesuits.

Who is paid. Operators pay for it as part of the suit, and suit makers fit it themselves because any of them could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects travellers during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A way off a failing ship saves lives but is carried as a fitting and rarely used.

Who is paid. Ship operators pay for it as part of the craft, and established shipbuilders supply it since any of them could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Materials taken from other worlds and from loose rock in space would feed an industry of their own.

Who is paid. Firms that need the material pay for it, and since others could dig the same way the gain goes to those who already own the ships and claims.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. Carriers and other firms working in space buy ships, and since a second yard could build the same craft the established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A craft that carries only its pilot serves scouts and crews, a niche within space transport.

Who is paid. Prospectors, carriers and expedition firms buy it, and established small-craft builders could all make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A light that burns in vacuum is a simple signal or work lamp for a few crews.

Who is paid. Space operators buy it for crews, and it is simple enough that many workshops could make it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Giving a whole world air and a climate people can live in would open new land for a large share of humanity.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It protects crews during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Passing in and out without losing air is essential but is a fitting of the craft.

Who is paid. Ship operators pay for it as part of the craft, and the established builders of ships and stations supply it since the idea is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names a crime, the seizing of ships by force, which nobody may lawfully buy.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place where craft lift off and land is what every flight to space depends on.

Who is paid. Carriers pay to use it, and since any port can be copied the gain goes to the large builders and the holders of the few good ground sites.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Deep sleep that saves food, water and air would make very long voyages possible.

Who is paid. Carriers would pay, and nothing in the description stops others doing it once it is shown to work, so the firms that already supply ships collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit with protective plating keeps a person alive and guarded outside, essential gear but only for a few; no military use is stated.

Who is paid. Space operators buy suits for their crews, and the few established makers of suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged under their own entries.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Breathable air is essential aboard, but this is a fitting inside a craft or suit, not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: a trained crew member is needed on every voyage but is a small part of its cost.

Who is paid. Ship operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Checking whether air is safe to breathe is a useful instrument for a few explorers.

Who is paid. Expedition firms buy it, assumed here, and gas-testing instruments are made by many firms, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Pushing craft with a beam from outside would let ships fly without carrying their own fuel, changing launch costs.

Who is paid. Ship operators pay for the push, and since others could build beam stations the gain goes to those who already own the sites and power plants.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Slowing a craft safely through air is essential to landing but is a part of the craft, not a product by itself.

Who is paid. Ship operators pay for it within the craft, and spacecraft builders supply it because the method is well understood and easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Spinning to give weight is a design feature of a habitat, useful but not a product of its own.

Who is paid. Whoever pays for the habitat pays for this, assumed here to be a government, and any habitat builder can use the idea so the established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Knowing where a ship is and keeping it on course is essential but is an instrument within the ship.

Who is paid. Ship operators buy it as part of the craft, and the established makers of flight instruments supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Backup thrusters are a safety part of a spacecraft.

Who is paid. Ship operators pay for them within the craft, and established engine makers supply them since they are easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Fuel made on the Moon would cut the cost of every voyage further out, an industry of its own.

Who is paid. Ship operators buy the fuel, and since the digging can be copied the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is the weightless state of anything coasting in orbit, a fact of nature and not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a crew find their way or see what lies about them, a useful fitting but only a part of the ship.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. As described it is a walking aid for those who work on small rocks, a niche; gravity for whole ships and stations is judged under the plates.

Who is paid. Mining firms buy the belts for their workers, and a small worn device can be made by many workshops, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a crew find their way or see what lies about them, a useful fitting but only a part of the ship.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A fuel additive that makes spaceflight cheap would change the cost of the whole industry.

Who is paid. Ship operators buy it with their fuel, and the description gives nothing that stops other chemical firms making it, so established fuel makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A place to land, park or refuel is a necessary part of space traffic but only an extra beside the ships and launch works.

Who is paid. Ship operators pay to use it, and it is easy to copy, so those who already hold the port sites collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A way off a failing ship saves lives but is carried as a fitting and rarely used.

Who is paid. Ship operators pay for it as part of the craft, and established shipbuilders supply it since any of them could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a unit of measure, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a handy loose item for space crews, a niche.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A capsule for dropping notes from orbit is a small convenience.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Pushing rocks out of the way keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a term for the planet a people came from, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A hall for exercise, games and the view is an amenity inside a station, not a product of its own.

Who is paid. Whoever pays for the habitat pays for this, assumed here to be a government, and any habitat builder can use the idea so the established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Keeping harmful radiation off the crew matters on every long voyage, but it is a feature of the hull and not a product by itself.

Who is paid. Ship operators pay for it within the craft, and shipbuilders fit it themselves since nothing stops others copying it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a viewing or steering instrument aboard a ship, useful to the crew but only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A picture of our planet from above is a keepsake and a wonder, assumed here to be sold as a print and not as a mapping service.

Who is paid. People buy copies, and once craft fly above the air anyone aboard can take such a picture, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Gentle thrust that uses very little fuel cuts the cost of long voyages and of keeping craft in place; the real thing exists and does this.

Who is paid. Ship operators pay, and once the engine was shown to work others could build it, so established engine builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working engine for travel between worlds sets the cost of every voyage it powers.

Who is paid. Ship operators pay, and once the engine was shown to work others could build it, so established engine builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A fuel that powers spacecraft engines would be bought for every voyage, an industry of its own.

Who is paid. Ship operators buy it, and unlike plain dust it is radioactive and needs special plants to make and handle, so the firms that already own such plants collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Spotting debris in time to steer clear keeps a ship safe, but it is an instrument aboard and only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Pushing rocks and other hazards away keeps a ship safe, but it is a safety fitting of the craft and not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and once the field worked other shipbuilders could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working engine for travel between worlds sets the cost of every voyage it powers.

Who is paid. Ship operators pay, and once the engine was shown to work others could build it, so established engine builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A floating launch base is a useful choice of site, not a new industry.

Who is paid. Launch firms pay for it, and builders of ships and offshore platforms could all make it, so those established yards collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a viewing or steering instrument aboard a ship, useful to the crew but only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A vessel that renews its own air, water and food could stay out for very long voyages, a working ship for a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a viewing or steering instrument aboard a ship, useful to the crew but only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Scheduled passenger travel between worlds would be a transport industry of its own.

Who is paid. The carrier buys the ship and sells the seats, and since many yards could build such a vessel the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: trained hands are needed on every voyage but are a small part of its cost.

Who is paid. Operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It keeps a person alive and able to work outside, essential gear but only for the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few established makers of suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a part of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Scheduled passenger travel between worlds would be a transport industry of its own.

Who is paid. The carrier buys the ship and sells the seats, and since many yards could build such a vessel the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A carry-along airtight shelter is a safety item for the few crews working on the Moon.

Who is paid. The description names crews, so their employers buy it, and a shelter that must hold air against vacuum is made by the established makers of suits and habitats, any of whom could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A private pleasure craft for space is a luxury for a few rich owners.

Who is paid. The description names private owners who buy it for themselves, and the yards that already build spacecraft could all make one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A ship that needs no carried fuel would cut the cost of moving people and cargo across space.

Who is paid. Carriers buy ships, and nothing in the description stops other yards building one once it is shown to work, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust or landing, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A clear ball enclosing a deck is judged as a vessel, since the description allows either a ship or a habitat; a working vessel founds a transport industry.

Who is paid. Carriers and expedition firms are assumed to buy it, and nothing in the description stops other yards building one, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a drifting heap of wrecks gathered by nature, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Metal and other materials from space rocks would be an industry of its own and could change the cost of raw materials.

Who is paid. Factories and builders buy the output, and since mining methods are easy to copy the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A beam that pulls distant objects in would change towing, docking and cargo handling in space and perhaps on the ground.

Who is paid. Ship and port operators buy it, and once shown to work others could build it, so established equipment makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It keeps a spacewalker attached to the ship, a simple safety item for a few workers.

Who is paid. Space operators buy it for crews, and it is simple hardware that many workshops could make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It saves lives in a disaster, but it is safety equipment carried aboard a larger ship.

Who is paid. Ship operators pay for it as required safety gear, and shipbuilders supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a detail of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and suit makers supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Travel between galaxies is the same service as travel between worlds or stars, a transport industry for those who go and not a change for most people.

Who is paid. Carriers buy the ships and sell the passage, assumed here as with other travel, and since ships can be copied the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A frame that holds a craft on the ground is a simple port fitting.

Who is paid. Port and ship operators buy it, and it is plain steel that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. An engine that moves ships faster or more cheaply would change the cost of all space transport.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A glowing post to mark a claim is a small item for prospectors.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a handy loose item for space crews, a niche.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A new world to live on would add living room for a large share of humanity.

Who is paid. No private buyer could fund a world, so a government pays and the large builders that already hold public works contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Warning of rocks ahead keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A shielded lane between worlds protects the ships that use it, a safety aid along a particular route.

Who is paid. It guards every passing ship, so a government is assumed to pay as for a beacon, and established builders could copy the projector once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a nickname for a small rock in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Magnets that hold a mining ship to a rock are a fitting of the ship, a tool within space mining.

Who is paid. Mining firms pay for it within the craft, and makers of mining and space gear could all build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Puffs of vapour that show where air is leaking are a cheap safety aid in a sealed structure.

Who is paid. Space operators buy it for crews, and it is simple enough that many workshops could make it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A way to survive a failing ship is something every operator wants but hopes never to use.

Who is paid. Ship operators buy it as part of the craft, and the established builders of ships and their fittings supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a part of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. The engine sets how far, how fast and how cheaply every ship can go; the description is general, so it is judged as drives are.

Who is paid. Whoever runs the ship pays for the engine, assumed here to be carriers, and once a firm had built it others could too, so established engine and ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names what space does to the body, a condition and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A small craft for short hops is a useful extra for a ship or station, not an industry of its own.

Who is paid. Ship and station operators buy it, assumed here, and existing spacecraft builders could all make something so simple.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust or landing, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Steering whole rocks to where they are wanted would serve mining and building in space, part of an industry of its own.

Who is paid. Mining and building firms are assumed to pay, and bolting engines to a rock is easy to copy, so the firms that already own ships and engines collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Travel faster than light would open other stars to trade and settlement, a transport industry of its own; it is a change for those who go, not for most people.

Who is paid. Ship operators pay for the drive, and once a firm had built it others could too, so established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a detail of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and suit makers supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. An engine that moves ships faster or more cheaply would change the cost of all space transport.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a tool for catching or shifting rock, useful only to those who mine in space.

Who is paid. Mining firms buy it, and makers of mining gear supply it since the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a handy loose item for space crews, a niche.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Prospecting among space rocks is paid work, a service and not a product.

Who is paid. Mining firms and metal buyers pay the prospectors, and anyone can train for the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Sensing nearby rocks and steering clear keeps a ship safe, but it is an instrument aboard and only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Moving other craft about in orbit is a steady support trade, not an industry of its own.

Who is paid. Port and ship operators buy tugs, and any spacecraft builder could make such a simple craft, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: trained hands are needed on every voyage but are a small part of its cost.

Who is paid. Operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Small thrusters let a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy them for their crews, and the makers of suits and space gear supply them because they are easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Telling what a rock holds before digging saves prospectors wasted effort, a niche tool.

Who is paid. Mining and prospecting firms buy it, and the established makers of survey instruments could all copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A line between ships for crossing over is a simple item for a few crews.

Who is paid. Ship operators buy it, and it is simple hardware that many workshops could make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Crossing between ships without suiting up is a convenience fitted to craft that meet often.

Who is paid. Ship operators pay for it as a fitting, and the established builders of ships supply it since it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Slowing a craft safely through air is essential to landing but is a part of the craft, not a product by itself.

Who is paid. Ship operators pay for it within the craft, and spacecraft builders supply it because the method is well understood and easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A new world to live on would add living room for a large share of humanity.

Who is paid. No private buyer could fund a world, so a government pays and the large builders that already hold public works contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Knowing where a ship is and keeping it on course is essential but is an instrument within the ship.

Who is paid. Ship operators buy it as part of the craft, and the established makers of flight instruments supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A lift from the ground to orbit would slash the cost of reaching space for every firm that uses it.

Who is paid. Shippers pay to send cargo up, and since another line could be built once the first was shown to work, the gain is assumed to go to the large builders and the holders of the few good ground sites.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A sharper telescope is useful to observatories and ships, a specialist instrument.

Who is paid. Observatories and ship operators buy it, assumed here, and established instrument makers supply it because the idea is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It saves lives in a disaster, but it is safety equipment carried aboard a larger ship.

Who is paid. Ship operators pay for it as required safety gear, and shipbuilders supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a necessary fitting on any crewed craft, but only a part of the ship.

Who is paid. Ship operators pay for it within the craft, and shipbuilders make it themselves since nothing stops others copying it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Flying about inside a great hollow habitat is a pleasant way to get around for those who live there, a convenience.

Who is paid. People living in the habitat buy their own, and a small personal device can be made by many workshops, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It adds to knowledge of the sky but yields nothing to sell, so its worth is limited to science.

Who is paid. Nobody could be charged for what it learns, so a government pays the instrument and probe builders that already hold such contracts.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Finding a world to live on would matter greatly in the end, but the search by itself yields nothing to sell.

Who is paid. Nobody could be charged for the search, so a government pays, and the explorers and ship operators that already hold such contracts do the work.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A plaque sent out for strangers to find is a gesture with nothing to sell.

Who is paid. A government pays for it as part of a science mission, and any workshop could engrave the plate.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. Carrying a whole world to a safer or better place would decide where a large share of humanity can live.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word for a person from another world, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Carrying a whole world to a safer or better place would decide where a large share of humanity can live.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A hollowed place for many people to live, lifted into orbit as a small moon, is a building project on the scale of an industry.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Thrust drawn from sunlight needs little or no fuel, which would cut the cost of voyages between worlds.

Who is paid. Ship operators pay, and once the engine was shown to work others could build it, so established engine builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a part of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. Carriers buy ships, and a hull grown from a living line can be regrown by anyone who holds a cutting, so the established shipbuilders and carriers collect as with any other ship.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a tool for catching or shifting rock, useful only to those who mine in space.

Who is paid. Mining firms buy it, and makers of mining gear supply it since the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Materials taken from other worlds and from loose rock in space would feed an industry of their own.

Who is paid. Firms that need the material pay for it, and since others could dig the same way the gain goes to those who already own the ships and claims.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Lighting a new sun would give warmth and daylight to whole worlds, opening living room for a large share of humanity.

Who is paid. Only a government could fund work on a star, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A sealed garment against a hostile spore-laden world keeps workers alive there, essential gear for a few.

Who is paid. Firms working on that world are assumed to buy it for their crews, and established makers of protective suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Finding worlds like ours is valuable knowledge but nobody buys it as a product.

Who is paid. The findings cannot be charged for, so a government pays, and the observatory builders that already hold science contracts supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Holding air in place without walls would make settling airless worlds far cheaper than building domes.

Who is paid. Settlements are public works a government pays for, and once the field was known other builders could copy it, so established settlement builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Real weight underfoot on any ship or station would be fitted almost everywhere people live in space.

Who is paid. Ship and station operators buy it, and once the plates worked other makers could copy them, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Calming a storm on a giant planet matters only to those who would work there, a niche.

Who is paid. It is assumed the firms mining that world pay for it as working gear, and makers of such equipment could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. An engine that moves ships faster or more cheaply would change the cost of all space transport.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Boots for walking on a giant planet's storm serve only the few who would work there, a niche.

Who is paid. Mining firms buy them for their crews, and they are assumed to be simple footwear that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A vessel carrying a whole population on a voyage of many lifetimes is an enormous building project.

Who is paid. Only a government could fund it, and the big shipbuilders and contractors already trusted with such work would be paid.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a viewing or steering instrument aboard a ship, useful to the crew but only a part of the craft.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Giving a whole world air and a climate people can live in would open new land for a large share of humanity.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Using the water a ship already carries as a barrier against radiation is a clever layout of the hull, not a product by itself.

Who is paid. Ship operators pay for it within the craft, and shipbuilders fit it themselves since nothing stops others copying it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It gathers knowledge about space or other worlds, which is valuable but which nobody buys as a product.

Who is paid. The findings cannot be charged for, so a government pays, and the builders that already hold science contracts supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Finding planets like ours by their light adds to knowledge and guides later voyages, with nothing to sell from it.

Who is paid. Nobody could be charged for the findings, so a government pays the instrument and probe builders that already hold such contracts.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A beam that pulls distant objects in would change towing, docking and cargo handling in space and perhaps on the ground.

Who is paid. Ship and port operators buy it, and once shown to work others could build it, so established equipment makers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A vast prize. A new world to live on would add living room for a large share of humanity.

Who is paid. No private buyer could fund a world, so a government pays and the large builders that already hold public works contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word for the moment a rocket leaves the ground, not a product; the craft and the launch works are judged separately.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A sharper telescope is useful to observatories and ships, a specialist instrument.

Who is paid. Observatories and ship operators buy it, assumed here, and established instrument makers supply it because the idea is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. A new world to live on would add living room for a large share of humanity.

Who is paid. No private buyer could fund a world, so a government pays and the large builders that already hold public works contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Warming cold ground so people can live on it would open new land, though it warms patches of ground and does not remake a whole world's air.

Who is paid. Making land livable is a public work a government pays for, and once the device was known the builders that already hold such contracts could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Thrusters that slow a craft are a necessary part of a spacecraft, not a product by themselves.

Who is paid. Ship operators pay for them within the craft, and established engine makers supply them since they are easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. As described it records pictures of the sky for those studying or steering by the stars, a specialist instrument; the real thing spread far wider than this promise.

Who is paid. Ship operators pay for it within the craft, and established instrument makers supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Pushing rocks and other hazards away keeps a ship safe, but it is a safety fitting of the craft and not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and once the field worked other shipbuilders could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A small craft that pushes or tows larger ships is working gear around ports, a niche within space transport.

Who is paid. Port and ship operators buy it, and established small-craft builders could all make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum or thin air is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A harbour where spacecraft unload is needed by the traffic it serves, but the prize lies in the transport and the port is a part of it.

Who is paid. Carriers pay to use it, and since another port could be built the gain goes to those who already hold the good berths and the fleets that call there.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A station for experiments yields knowledge more than goods, valuable but mostly not sold as a product.

Who is paid. Most findings cannot be charged for, so a government is assumed to pay, and the station builders that already hold science contracts supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Reading what a small world is made of from afar saves a wasted trip, a niche tool.

Who is paid. It is assumed to serve prospecting and not pure science, so mining firms buy it, and the established makers of probes and survey instruments could all copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Seeing inside a small rock before digging saves prospectors wasted effort, a niche tool.

Who is paid. Mining and prospecting firms buy it, and the established makers of survey instruments could all copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Holding air in place without walls would make settling airless worlds far cheaper than building domes.

Who is paid. Settlements are public works a government pays for, and once the field was known other builders could copy it, so established settlement builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Breathable air is essential aboard, but this is a fitting inside a craft or suit, not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A vessel the size of a small world carrying a whole society is an enormous building project.

Who is paid. Only a government could fund it, and the big shipbuilders and contractors already trusted with such work would be paid.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in a hostile place is vital to its wearer but serves only the few who work there.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Warning of large objects ahead keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Racing rocket craft for sport is a costly pastime for a few racers and those who watch them.

Who is paid. Racers buy the craft and crowds pay to watch, and since any yard could build a racing craft the established builders of small craft collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Soles that cling to the deck let crews walk without weight, a small piece of crew gear.

Who is paid. Ship operators buy them for crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A vehicle for crossing the ground of another world is working gear for the few crews there.

Who is paid. No user is named, so a firm working on that world is assumed to buy it, and established vehicle builders could all make one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Powered tracks on the boots help a suited worker move over ground, a small piece of crew gear.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A movable room holding the air a particular creature needs is a niche fitting for carrying unusual passengers.

Who is paid. Carriers and stations are assumed to buy it, and the established makers of life support could all build one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Soles that stick to surfaces let crews walk without weight, a small piece of crew gear.

Who is paid. Ship operators buy them for crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A jail on a bare rock is a costly way to do what prisons on the ground already do.

Who is paid. Only a government runs prisons, and the contractors that already build and supply them would be paid.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged under their own entries.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not something made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Steering whole rocks to where they are wanted would serve mining and building in space, part of an industry of its own.

Who is paid. Mining and building firms are assumed to pay, and fixing engines to a rock is easy to copy, so the firms that already own ships and engines collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A gambling resort in orbit is a costly holiday for those who can afford the trip, a niche within leisure.

Who is paid. Visitors pay, and since another resort could be built the gain is assumed to go to the firms that already run casinos and hotels and own the ships that reach it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It gathers knowledge about space or other worlds, which is valuable but which nobody buys as a product.

Who is paid. The findings cannot be charged for, so a government pays, and the builders that already hold science contracts supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It protects crews during hard thrust, which matters only to the few who fly such ships.

Who is paid. Ship operators pay for it as part of the craft, and the firms that already build ships and their fittings supply it since others could copy the design.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Star maps are needed on every voyage but are a small part of its cost.

Who is paid. Ship operators buy them, and once the sky has been surveyed anyone can draw and print such maps, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A station where traders meet is a marketplace, useful to the trade that passes but only a place to deal.

Who is paid. Traders pay for berths and stalls, assumed here, and whoever already owns the station collects since a second post nearby would have to be built.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Unlike a launch track serving all cargo, this only moves ore from a mine, a tool within space mining.

Who is paid. Mining firms pay for it, and makers of mining and launch gear could all build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a handy detail of a helmet, a convenience for the few people who wear spacesuits.

Who is paid. Operators pay for it as part of the suit, and suit makers fit it themselves because any of them could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It saves lives in a disaster, but it is safety equipment carried aboard a larger ship.

Who is paid. Ship operators pay for it as required safety gear, and shipbuilders supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a being from another world, a creature and not a technology.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A way off a failing ship saves lives but is carried as a fitting and rarely used.

Who is paid. Ship operators pay for it as part of the craft, and established shipbuilders supply it since any of them could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Skis for crossing loose Moon dust are a small aid to those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Heavy shoes that keep a worker planted where things weigh little are a niche aid for a few crews.

Who is paid. Space operators buy it for their crews, and unlike plain weighted shoes it needs a dense material no workshop has, so the established makers of space gear supply it, though any of them could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A spaceship a private person can own and fly would open a new kind of private travel.

Who is paid. Private owners buy the ship, assumed here to be ordinary people and not firms, and since the design could be copied the established builders of craft collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A cheap reusable way from the ground to orbit would cut the cost of everything done in space.

Who is paid. Carriers buy the craft to move people and cargo, and once it flew other builders could copy it, so established craft builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A cargo ship, even an old slow one, is the working vessel of trade between worlds, a transport industry of its own.

Who is paid. Shippers and carriers buy and run such ships, and many yards could build them, so established builders and fleet owners collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A remote box for catching drifting specks is a tool for sampling, assumed here to serve prospecting or testing.

Who is paid. Firms working in space buy it, assumed here, and the established makers of space equipment could all copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a skill, judged by the work it sells: plotting a course is needed on every voyage but is a small part of its cost.

Who is paid. Ship operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A field that both shields a ship from debris and gathers fuel as it flies would cut the cost of every voyage.

Who is paid. Ship operators pay, and once the field worked other shipbuilders could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Holding air in place without walls would make settling airless worlds far cheaper than building domes.

Who is paid. Settlements are public works a government pays for, and once the field was known other builders could copy it, so established settlement builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Metal and other materials from space rocks would be an industry of its own and could change the cost of raw materials.

Who is paid. Factories and builders buy the output, and since mining methods are easy to copy the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A frame to hold a landed ship is plain ground equipment at a port.

Who is paid. Port operators buy it, and a steel frame is something many firms could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Giving a whole world air and a climate people can live in would open new land for a large share of humanity.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. An engine that moves ships faster or more cheaply would change the cost of all space transport.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A private pleasure craft for hops above the air is a luxury for a few owners, like the other yachts.

Who is paid. Ordinary people buy the craft for themselves, and since others could copy it the established vehicle builders and their dealers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A yard that resells old ships is an ordinary trade, a convenience for buyers.

Who is paid. Small operators buy the ships, and anyone with a patch of ground could open such a yard, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Unlike a mirror that remakes a whole world, this lights or warms chosen regions of the ground, worth an industry but not a new world.

Who is paid. Light falling on a region cannot be charged to each person under it, so a government is assumed to pay, and established satellite builders supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Breathable air is essential, but this is a fitting inside a craft, suit or camp, not an industry of its own.

Who is paid. Ship and expedition operators pay for it with their other gear, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a way of doing things that needs no new equipment, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A signal that guides craft down to a safe landing is a necessary piece of port equipment, not an industry of its own.

Who is paid. Port operators buy it, and established makers of radio and landing gear could all supply it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a knack a crew member picks up with practice, not a product or a service sold by itself.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It keeps a person alive and able to work outside, essential gear but only for the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few established makers of suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: sifting loose deposits by hand is small-scale digging beside the mines.

Who is paid. Mining firms or buyers of the ore pay for the work, assumed here, and anyone with a pan and the training can do it, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is an event, a crowd racing to stake claims, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a part of a suit, useful to the wearer but not a product by itself.

Who is paid. Space operators pay for it within the suit, and the established suit makers supply it since any of them can copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for people to live and work beyond Earth is a building industry of its own.

Who is paid. A station is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names what space does to the body, a condition and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Crossing between ships without suiting up is a convenience fitted to craft that meet often.

Who is paid. Ship operators pay for it as a fitting, and the established builders of ships supply it since it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a creature found in space, not bred or built by anyone, so it is not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A handheld finder for radioactive ore is a prospector's tool, a niche.

Who is paid. Prospecting firms buy it, and radiation detectors are ordinary instruments that many firms make, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Gathering fuel from the dust and gas along the way would free a ship from carrying it, a large gain for every voyage.

Who is paid. Whoever runs the ship pays for the engine, assumed here to be carriers, and once a firm had built it others could too, so established engine and ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A small personal vehicle that reaches orbit would open a new kind of private travel.

Who is paid. Ordinary people buy the vehicle, but it only flies on beamed power, so the owners of the power stations collect most.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A shelter that goes up quickly serves small parties working on airless ground, a niche.

Who is paid. No user is named, so it is assumed that firms working on other worlds buy it as working gear, and a shelter that must hold air against vacuum is made by the established makers of suits and habitats, any of whom could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit that keeps a person alive in a hostile place is vital to its wearer but serves only the few who work there.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Warning of rocks ahead keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Pushing rocks and other hazards away keeps a ship safe, but it is a safety fitting of the craft and not an industry of its own.

Who is paid. Ship operators pay for it within the craft, and once the field worked other shipbuilders could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Real weight underfoot without spinning the ship would be fitted almost everywhere people live in space.

Who is paid. Ship and station operators buy it, and once it worked other makers could copy it, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A marker in space for navigators is a minor aid to navigation.

Who is paid. A beacon serves all ships and none can be charged, so a government pays, and a simple transmitter or light is something many firms could build.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Moving other craft about in orbit is a steady support trade, not an industry of its own.

Who is paid. Port and ship operators buy tugs, and any spacecraft builder could make such a simple craft, so established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It names what space does to the body, a condition and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A vast prize. Giving a whole world air and a climate people can live in would open new land for a large share of humanity.

Who is paid. Only a government could fund work on a whole world, and the large engineering firms that already hold such contracts would be paid to do it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Sensing nearby objects so a ship can steer clear is essential but is an instrument within the ship.

Who is paid. Ship operators buy it as part of the craft, and the established makers of flight instruments supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It keeps a person alive and able to work outside, essential gear but only for the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few established makers of suits can all copy a design, so they collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Heavy shoes that steady the wearer on a light world are a small piece of crew gear.

Who is paid. No buyer is named, so firms working on such worlds are assumed to buy them for crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A private home in orbit is a dwelling for a very few who could afford and want it.

Who is paid. Unlike other stations the description names a private resident, who pays for it, and established station builders could all make one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It saves lives in a disaster, but it is safety equipment carried aboard a larger ship.

Who is paid. Ship operators pay for it as required safety gear, and shipbuilders supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A tiny craft for a lone occupant that also serves as a lifeboat is a niche fitting.

Who is paid. Ship operators pay for it as part of the craft, and established shipbuilders supply it since any of them could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Warning of rocks ahead keeps a ship safe, but it is a fitting on the craft, not an industry.

Who is paid. Ship operators pay for it within the craft, and the firms that already make ship instruments supply it since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It is a job, judged by the work it sells: a trained pilot is needed on every flight but is a small part of its cost.

Who is paid. Ship operators pay the wages, and anyone with the training can do the work, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It is a trainee crew role, judged like the other jobs by the work and training it involves, a small part of what a voyage costs.

Who is paid. Ship operators are assumed to pay to train and keep their trainee crews, and anyone can apply and learn, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A chart of dangerous radiation helps the few ships in a region plan safe passage.

Who is paid. Like a weather service it serves all ships and is hard to charge each of them for, so a government is assumed to pay the forecasting bodies and suppliers that already do such work.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A private pleasure craft for space is a luxury for a few rich owners.

Who is paid. The description names private owners who buy it for themselves, and the yards that already build spacecraft could all make one.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Metal and other materials from space rocks would be an industry of its own and could change the cost of raw materials.

Who is paid. Factories and builders buy the output, and since mining methods are easy to copy the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. An outpost at a strategic point between the stars is a very large building project.

Who is paid. A strategic outpost is assumed to be military, so a government pays, and the big builders that already hold defence and space contracts collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a way of flying, the flip at the midpoint of a trip, that needs no new equipment and is not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It saves lives in a disaster, but it is safety equipment carried aboard a larger ship.

Who is paid. Ship operators pay for it as required safety gear, and shipbuilders supply it because the design is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A relay that stays over one place carries broadcasts and calls across the world, an industry of its own.

Who is paid. Broadcasters and phone firms pay for the relay, and since many builders can make such satellites the gain goes to operators that already hold the orbit places and networks.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Metal and other materials from space rocks would be an industry of its own and could change the cost of raw materials.

Who is paid. Factories and builders buy the output, and since mining methods are easy to copy the firms that already own ships and refineries collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A place to land, park or refuel is a necessary part of space traffic but only an extra beside the ships and launch works.

Who is paid. Ship operators pay to use it, and it is easy to copy, so those who already hold the port sites collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It lets a settler family live on an airless world, a niche for the few who homestead there.

Who is paid. It is a dwelling, so settlers are assumed to buy it for themselves, and a shelter that must hold air against vacuum is made by the established makers of suits and habitats, any of whom could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Voyages to other stars are the same service as travel between worlds, a transport industry of its own for those who go and not a change for most people.

Who is paid. Carriers buy the ships and sell the passage, assumed here as with travel between worlds, and since ships can be copied the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

No prize. It is a natural thing or event in space, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A net for catching small rocks is a tool within space mining, not the industry itself.

Who is paid. Mining firms buy it, and the makers of mining and space gear could all produce it, which is why it earns less than mining as a whole.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. The promise is a steady engine that takes ships to great speed on little fuel, which would change the cost of space transport; the real engine so far moves only small craft.

Who is paid. An engine is bought by whoever runs the ship, assumed here to be carriers, and established engine builders could copy it once it worked.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A small extra craft that can serve as an escape boat is something every operator wants aboard.

Who is paid. Ship operators buy it as part of the craft, and the established builders of ships and their fittings supply it since it can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a way of flying or moving, not a product; the craft and gear that do it are judged under their own entries.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping muscles strong in weak gravity matters to the few who live there, a niche.

Who is paid. Operators of bases and ships buy it for their crews, and established builders of such fittings supply it since it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A place for many people to live and work beyond Earth is a building industry of its own.

Who is paid. A settlement is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A vessel carrying a whole population on a voyage of many lifetimes is an enormous building project.

Who is paid. Only a government could fund it, and the big shipbuilders and contractors already trusted with such work would be paid.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Travel to other stars would open them to trade and settlement, a transport industry of its own; it is a change for those who go, not for most people.

Who is paid. Ship operators pay for the drive, and once a firm had built it others could too, so established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A drifting bladder that plugs a leak until repairs come is a simple safety item for a sealed habitat.

Who is paid. Whoever pays for the habitat pays for this, assumed here to be a government, and it is simple enough that many firms could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word or a unit of measure, not a product.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. Building from local rock would sharply cut the cost of any base on the Moon.

Who is paid. A government is assumed to pay for lunar bases, and the method can be copied, so the contractors already building there collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A lift from the ground to orbit would slash the cost of reaching space for every firm that uses it.

Who is paid. Shippers pay to send cargo up, and since another line could be built once the first was shown to work, the gain is assumed to go to the large builders and the holders of the few good ground sites.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Flinging or pushing payloads to space without big rockets would change the cost of the whole launch industry.

Who is paid. Firms with cargo to launch pay, and since others could build such works the gain goes to those who already own launch sites and power.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. Carriers and other firms working in space buy ships, and since a second yard could build the same craft the established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A working vessel for travel between worlds would found a transport industry of its own.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. The nozzle stands here for the nuclear rocket it belongs to, an engine that would set how far and fast ships can go.

Who is paid. Whoever runs the ship pays for the engine, assumed here to be carriers, and once a firm had built it others could too, so established engine and ship builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Water and air made on the Moon would spare hauling them from Earth, lowering costs for everything based there.

Who is paid. Firms working on the Moon buy the water and air, and baking rock is a method any miner could copy, so the operators that already hold the sites and plant collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A shelter that goes up quickly serves small parties on airless ground, a niche.

Who is paid. No user is named, so it is assumed that firms working on other worlds buy it as working gear, and a shelter that must hold air against vacuum is made by the established makers of suits and habitats, any of whom could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. It lets a settler family grow food on an airless rock, a niche for the few who homestead there.

Who is paid. Settlers are assumed to buy it for themselves, and a shelter that must hold air against vacuum is made by the established makers of suits and habitats, any of whom could copy it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Training for would-be settlers is a niche service for the few who go.

Who is paid. Settlers pay their own fees, assumed here, and anyone with the knowledge can open a school, so no seller keeps much.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A working ship that carries people and cargo between worlds is the base of a whole transport industry.

Who is paid. The story's craft belongs to invaders, but judged as a ship it is assumed carriers would buy it, and a second yard could build the same craft so established shipbuilders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Thickening thin air until a person can breathe it is a useful piece of kit for the few who work on such worlds.

Who is paid. Ship and expedition operators pay for it with their other gear, and the established builders of ships and suits supply it because the method is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. A reusable craft flying between the ground and a station is the working vessel of a transport industry of its own; the real thing flew but cost far more than the promise.

Who is paid. Carriers and expedition firms buy ships, and many yards could build them once shown how, so established vehicle builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A large prize. An outpost built up piece by piece for people to live and work in orbit is a building industry of its own.

Who is paid. A station is a public work a government pays for, and the big construction and space firms that already win such contracts would build it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A waypoint where travellers change ships is needed by the traffic it serves, but the prize lies in the transport and the port is a part of it.

Who is paid. Unlike other stations this is a port, so the carriers that call there are assumed to pay to use it as they would a spaceport, and since such a port can be copied the large builders and port owners collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A small prize. Spinning to give weight is a design feature of a station, useful but not a product of its own.

Who is paid. Whoever pays for the station pays for this, assumed here to be a government, and any station builder can use the idea so the established builders collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A warm dry shelter is a local comfort for settlers on a rain-soaked world.

Who is paid. The shelters are assumed to be public refuges open to any settler, so a government pays, and ordinary building firms supply them.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. A world covered from end to end by city is a settlement at the largest scale, an enormous building project.

Who is paid. Residents and shopkeepers each pay for their own space in open air, as in any city, and the developers, builders and landowners already there collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Fast flight between distant cities by way of space would change long-distance travel.

Who is paid. Airlines and carriers buy the craft, and once it flew other builders could copy it, so established craft builders and carriers collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A pocket finder for lost tools is a small convenience for orbital workers.

Who is paid. Space operators buy it for crews, and it is ordinary electronics that many firms could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. It helps a spacewalker get around while weightless, a niche tool for a few workers.

Who is paid. Space operators buy it for their crews, and the makers of suits and space gear supply it because it is easy to copy.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A suit that keeps a person alive in vacuum is vital to its wearer but serves only the few who work in space.

Who is paid. Space operators buy suits for their crews, and the few firms that already make such gear supply them since the design can be copied.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a natural thing or place in space, not something made or sold.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. A quick patch for a holed hull can save a crew, but it is a cheap spare, a niche.

Who is paid. Space operators buy it for their crews, and it is simple enough that any workshop could make it.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Keeping your footing where there is little or no weight is a small convenience for those who work there.

Who is paid. Space operators buy it for their crews, and it is a simple loose item that any workshop could make.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a word, not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

No prize. It is a kind of planet, a natural thing and not a product anyone makes or sells.

Who is paid. Nothing is sold, so nobody pays and no seller collects.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.

A small prize. Forecasts of storms in space are useful to every voyage but a small part of its cost; the forecasters and their map are the same service.

Who is paid. As with the weather map, a forecast serves every ship and is hard to charge for, so a government is assumed to pay, and the forecasting bodies that already hold the watching instruments collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is not very sure of this one.

A large prize. Cheap passenger rockets for holidays would open space travel to ordinary people, a travel industry of its own.

Who is paid. The carrier buys the rocket and holidaymakers buy seats from it, as with a liner, and since the rockets could be copied the builders and carriers that already own fleets and ports collect.

A model's judgement, not a reading, of the idea as if it worked the way its story promises. The model is fairly sure of this one.