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* The ''VideoGame/OuterWilds: Echoes of the Eye'' DLC is set on "the Stranger," a {{Ringworld|planet}} hiding behind an InvisibilityCloak. It originated from outside your solar system, but was flown there on solar sails hundreds of thousands of years ago. Said sails deploy shortly after you board the station ([[spoiler:in response to detecting that your sun is about to go supernova]]), and unfortunately, ''because'' the Stranger is so old, the shock of this is TheLastStraw for the dam inside its habitat, resulting in a GiantWallOfWateryDoom sweeping along the inside of the ring.
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* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* Solar sails are used as weapons in the ''Literature/RevelationSpaceSeries'' -- a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* Solar sails are used as weapons in the ''Literature/RevelationSpaceSeries'' -- a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
to:
* At ''Literature/TheNanoFlower'': Nearing the end of ''The Nano Flower'' by Creator/PeterFHamilton, end, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* Solar sails are used as weapons in the''Literature/RevelationSpaceSeries'' -- a ''Literature/RevelationSpaceSeries''--a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* Solar sails are used as weapons in the
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Like a sailing ship, which uses the contrary force vectors of the water and the wind to choose its direction, a solar sail ship uses the contrary vectors of the sun's gravity (always in) and the sun's light (straight out). A sail ship angles relative to the sun to either increase or decrease its tangential orbital velocity, and therefore the radius of its orbit. In some cases, a solar sail might be used to "hang" a ship or satellite over a star in a place orbital mechanics don't allow (see: DysonSphere), but in this case it's more of a solar parachute.
Unlike a sailing ship at the waters, however, a solar sail cannot "tack" into the solar wind. Tacking requires a keel submerged in a medium with much greater drag (e.g. water), which a solar sailing vessel lacks. It ''is'' possible to lower one's orbit using a solar sail, by angling the sail to deflect the sun's rays forwards, decelerating the spacecraft and causing it to fall in closer to the sun; traditional watercraft-style tacking is out, however.
Unlike a sailing ship at the waters, however, a solar sail cannot "tack" into the solar wind. Tacking requires a keel submerged in a medium with much greater drag (e.g. water), which a solar sailing vessel lacks. It ''is'' possible to lower one's orbit using a solar sail, by angling the sail to deflect the sun's rays forwards, decelerating the spacecraft and causing it to fall in closer to the sun; traditional watercraft-style tacking is out, however.
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Like a sailing ship, which uses the contrary force vectors of the water and the wind to choose its direction, a solar sail ship uses the contrary vectors of the sun's gravity (always in) and the sun's light (straight out). A sail ship angles relative to the sun to either increase or decrease its tangential orbital velocity, and therefore the radius of its orbit. In some cases, a solar sail might be used to "hang" a ship or satellite over a star in a place orbital mechanics don't allow (see: DysonSphere), but in this case it's more of a solar parachute.
parachute. Unlike a sailing ship at the waters, however, a solar sail cannot "tack" into the solar wind. Tacking requires a keel submerged in a medium with much greater drag (e.g. water), friction, which a solar sailing vessel lacks. It ''is'' possible to lower one's orbit using a solar sail, by angling the sail to deflect the sun's rays forwards, decelerating the spacecraft and causing it to fall [[SpaceFriction is famously lacking in closer to the sun; traditional watercraft-style tacking is out, however.
space.]]
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* ''Centauri Knights'' uses beam-assisted magsail ships as the only means of travel between Alpha Centauri and the Sol system. They travel at a significant fraction of light speed, but the trip still takes seven years.
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* The ''TabletopGame/BigEyesSmallMouth'' sourcebook ''Centauri Knights'' uses beam-assisted magsail ships as the only means of travel between Alpha Centauri and the Sol system. They travel at a significant fraction of light speed, but the trip still takes seven years.
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The solution? Build a paper-thin mirrored sail a hundred kilometers across, and hang it in front of your ship - the pressure of light from stars will slowly propel your ship outwards. As you get closer to a star, you get more thrust, and as you get further away, the thrust drops off according to the inverse-square law. Using the thrust to move directly away from the sun is rarely the goal, since the acceleration is low and continuous and doesn't usually equal the sun's gravity.
to:
The solution? Build a paper-thin mirrored sail a hundred kilometers across, and hang it in front of your ship - -- the pressure of light from stars will slowly propel your ship outwards. As you get closer to a star, you get more thrust, and as you get further away, the thrust drops off according to the inverse-square law. Using the thrust to move directly away from the sun is rarely the goal, since the acceleration is low and continuous and doesn't usually equal the sun's gravity.
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Real-life solar sailing is limited to attitude and rotational control, but it has still advanced by quite a lot despite the technology's infancy - Japan has already sent a solar sailing spacecraft on a Venus flyby trajectory in 2010, and other agencies and groups are planning to launch solar sails for purposes other than to test the sail itself.
Common in hard science fiction, or as TechnoBabble for SpaceSailing starships.
Common in hard science fiction, or as TechnoBabble for SpaceSailing starships.
to:
Real-life solar sailing is limited to attitude and rotational control, but it has still advanced by quite a lot despite the technology's infancy - -- Japan has already sent a solar sailing spacecraft on a Venus flyby trajectory in 2010, and other agencies and groups are planning to launch solar sails for purposes other than to test the sail itself.
Common in hard science fiction, or asTechnoBabble {{Technobabble}} for SpaceSailing starships.
Common in hard science fiction, or as
* ''Anime/MartianSuccessorNadesico'' uses this brilliantly. To lure out a hidden Jovian weapon that's been attacking them, Yurika shuts off the Nadesico and has the Aestivalises hooked up to solar sails to keep them powered up, making it akin to fishing. Once the weapon is finally revealed, everything's reactivated and the crew forces it to escape.
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* ''Anime/MartianSuccessorNadesico'' used this brilliantly. To lure out a hidden Jovian weapon that's been attacking them, Yurika shuts off the Nadesico and has the Aestivalises hooked up to solar sails to keep them powered up, making it akin to fishing. Once the weapon is finally revealed, everything's reactivated and the crew forces it to escape.
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* ''ComicBook/GuardiansOfTheGalaxy'' character Starhawk had these built into his spandex super-suit, one set one his back and a matching set on his head -- which is impractical and unlikely, [[RuleOfCool but]]...
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* ''ComicBook/GuardiansOfTheGalaxy'' character Starhawk had has these built into his spandex super-suit, one set one his back and a matching set on his head -- which is impractical and unlikely, [[RuleOfCool but]]...
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[[folder:Film]]
* The ''Venture Star'' in ''{{Film/Avatar}}'' uses a solar sail to accelerate to its destination several lightyears away. A laser in the Sol System provides thrust for the sail to get up to 70% lightspeed. However, the ship uses an antimatter rocket to slow down when it reaches Alpha Centauri. The reverse is true on return trip: accelerating away from Alpha Centauri with antimatter rocket and slow down to Sol with laser.
* Count Dooku in ''Film/AttackOfTheClones'' uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
* Jim Hawkins' sailboard and the RLS Legacy from ''WesternAnimation/TreasurePlanet'' are referred to as solar sails, but they have little in common with actual solar sails—here they're seen as being pushed by "solar winds" much like sailing ships on oceans use planetary winds.
* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
* The titular ship deploys one to recharge near the start of ''Film/AlienCovenant'', working more like solar panels than this trope.
* The pod people from ''Film/InvasionOfTheBodySnatchers'' are StarfishAliens that are propelled interstellar distances by solar winds.
* The ''Venture Star'' in ''{{Film/Avatar}}'' uses a solar sail to accelerate to its destination several lightyears away. A laser in the Sol System provides thrust for the sail to get up to 70% lightspeed. However, the ship uses an antimatter rocket to slow down when it reaches Alpha Centauri. The reverse is true on return trip: accelerating away from Alpha Centauri with antimatter rocket and slow down to Sol with laser.
* Count Dooku in ''Film/AttackOfTheClones'' uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
* Jim Hawkins' sailboard and the RLS Legacy from ''WesternAnimation/TreasurePlanet'' are referred to as solar sails, but they have little in common with actual solar sails—here they're seen as being pushed by "solar winds" much like sailing ships on oceans use planetary winds.
* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
* The titular ship deploys one to recharge near the start of ''Film/AlienCovenant'', working more like solar panels than this trope.
* The pod people from ''Film/InvasionOfTheBodySnatchers'' are StarfishAliens that are propelled interstellar distances by solar winds.
to:
* The ''Venture Star'' in ''{{Film/Avatar}}'' uses a solar sail to accelerate to its destination several lightyears away. A laser in the Sol System provides thrust for the sail to get up to 70% lightspeed. However, the ship uses an antimatter rocket to slow down when it reaches Alpha Centauri. The reverse is true on return trip: accelerating away from Alpha Centauri with antimatter rocket and slow down to Sol with laser.
* Count Dooku in ''Film/AttackOfTheClones'' uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
* Jim Hawkins' sailboard and the RLS Legacy from ''WesternAnimation/TreasurePlanet'' are referred to as solar sails, but they have little in common with actual solar
* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
* The titular ship deploys one to recharge near the start of ''Film/AlienCovenant'', working more like solar panels than this trope.
* The pod people from ''Film/InvasionOfTheBodySnatchers'' are StarfishAliens that are propelled interstellar distances by solar winds.
[[folder:Film -- Live-Action]]
* The titular ship deploys one to recharge near the start of ''Film/AlienCovenant'', working more like solar panels than this trope.
* In ''Film/AttackOfTheClones'', Count Dooku uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
* The ''Venture Star'' in ''Film/{{Avatar}}'' uses a solar sail to accelerate to its destination several lightyears away. A laser in the Sol System provides thrust for the sail to get up to 70% lightspeed. However, the ship uses an antimatter rocket to slow down when it reaches Alpha Centauri. The reverse is true on return trip: accelerating away from Alpha Centauri with antimatter rocket and slow down to Sol with laser.
* The pod people from ''Film/InvasionOfTheBodySnatchers'' are StarfishAliens that are propelled interstellar distances by solar winds.
* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
[[/folder]]
* The titular ship deploys one to recharge near the start of ''Film/AlienCovenant'', working more like solar panels than this trope.
* In ''Film/AttackOfTheClones'', Count Dooku uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
* The ''Venture Star'' in ''Film/{{Avatar}}'' uses a solar sail to accelerate to its destination several lightyears away. A laser in the Sol System provides thrust for the sail to get up to 70% lightspeed. However, the ship uses an antimatter rocket to slow down when it reaches Alpha Centauri. The reverse is true on return trip: accelerating away from Alpha Centauri with antimatter rocket and slow down to Sol with laser.
* The pod people from ''Film/InvasionOfTheBodySnatchers'' are StarfishAliens that are propelled interstellar distances by solar winds.
* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
[[/folder]]
Changed line(s) 47 (click to see context) from:
* The Martians in ''Literature/LastAndFirstMen'' by Creator/OlafStapledon, being creatures whose body is composed of trillions of nanoscopic (not microscopic) viruses that communicate on a central nervous system of radiation, are able to conform their bodies into thin solid sheets that can traverse interplanetary distances. This is how they reach an Earth inhabited by the Second Men to begin their crusade to 'liberate' terrestrial diamonds which they believe are being handled sacrilegiously by the planet's dominate species, which the Martians also mistakenly think are the humans' radio devices.
to:
[[AC:Examples by author:]]
* Creator/CordwainerSmith has interstellar solar sails in two stories, "The Lady Who Sailed ''The Soul''" and "Think Blue, Count Two." They're the basis of humanity's first expansion to other solar systems, in decades-long voyages with passengers in suspended animation.
[[AC:Examples by title:]]
* [[TropeMakers The original]] StarfishAliens, the Elder Things introduced in ''Literature/AtTheMountainsOfMadness'', have fan-like wings that act as biomechanical ones allowing them to fly through space in the nude. [[BatmanCanBreatheInSpace They're apparently very good at holding their breath]] (although holding your breath in outer space would be a really bad idea as the air inside your lungs will expand and rupture your insides).
* TheMartians ''Odette II'', the yacht club's training vessel (and a former pirate ship), in ''Literature/LastAndFirstMen'' by Creator/OlafStapledon, being creatures whose body is composed ''Literature/BodaciousSpacePirates''.
* In Creator/AllenSteele's ''Literature/CaptainFuture'' novel ''Avengers oftrillions the Moon'', ''Creator/LeighBrackett'' makes use of nanoscopic (not microscopic) viruses that communicate on an enormous lens located at a central nervous system of radiation, are able Lagrange point near the Moon to conform their bodies into thin solid sheets that can traverse interplanetary distances. concentrate photonic energy against its sail. Smaller vessels use it as TheMothership to carry them to Mars. This is how they reach an Earth inhabited by the Second Men becomes a plot point when a saboteur tries to begin their crusade to 'liberate' terrestrial diamonds which they believe are being handled sacrilegiously by the planet's dominate species, which the Martians also mistakenly think are the humans' radio devices. detach Future's spaceship from its mooring cradle so they'll be [[DramaticSpaceDrifting stranded in space]], as a vessel with this form of propulsion can't just stop and pick them up again without becoming stranded themselves.
* Creator/CordwainerSmith has interstellar solar sails in two stories, "The Lady Who Sailed ''The Soul''" and "Think Blue, Count Two." They're the basis of humanity's first expansion to other solar systems, in decades-long voyages with passengers in suspended animation.
[[AC:Examples by title:]]
* [[TropeMakers The original]] StarfishAliens, the Elder Things introduced in ''Literature/AtTheMountainsOfMadness'', have fan-like wings that act as biomechanical ones allowing them to fly through space in the nude. [[BatmanCanBreatheInSpace They're apparently very good at holding their breath]] (although holding your breath in outer space would be a really bad idea as the air inside your lungs will expand and rupture your insides).
* The
* In Creator/AllenSteele's ''Literature/CaptainFuture'' novel ''Avengers of
Changed line(s) 49 (click to see context) from:
* The arrival of an alien solar sail vessel in a human colonized system in ''Literature/TheMoteInGodsEye'' starts off the plot - although this one was the variation that is initially accelerated by a planet-based laser emitter.
to:
* Nathan Lowell's ''[[http://www.solarclipper.com Golden Age of the Solar Clipper]]'' series has the titular ships using the magnetic sail variant to cruise out of star systems on the solar wind, then use a jump drive to reach the edge of the next system and a "gravity keel" to tack against the solar wind there.
* The Martians in ''Literature/LastAndFirstMen'', being creatures whose bodies are composed of trillions of nanoscopic (not microscopic) viruses that communicate on a central nervous system of radiation, are able to conform their bodies into thin solid sheets that can traverse interplanetary distances. This is how they reach an Earth inhabited by the Second Men to begin their crusade to 'liberate' terrestrial diamonds which they believe are being handled sacrilegiously by the planet's dominate species, which the Martians also mistakenly think are the humans' radio devices.
* The arrival of an alien solar sail vessel in a human colonized system in ''Literature/TheMoteInGodsEye'' starts off the plot- -- although this one was the variation that is initially accelerated by a planet-based laser emitter. emitter.
* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* Solar sails are used as weapons in the ''Literature/RevelationSpaceSeries'' -- a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* In ''Literature/RoadToMars'', the [[MultinationalTeam multinational crew]] of the ''Ares'' receives orders from MissionControl to beat the Chinese ''Millennium Boat'' in a race to be the first humans on the red planet. TheCaptain of the ''Ares'' has the crew adjust the course to get dangerously close to the Sun in order to shave off a few hours and orders the crew into the living pod in order to shield everyone from increased heat and radiation. Just then, he gets a message from MissionControl, letting him know that there is a secret container aboard the craft, containing an experimental solar sail (the knowledge was kept secret in order to allow the company to file a patent on the new lightweight material). He is also told that a solar flare is about to occur just as they're passing the Sun. This will not only allow the sail to unfurl and give them the needed boost to beat the Chinese, but the magnetic field will also shield the craft from radiation, allowing the crew to go EVA to set up the sail ([[spoiler:unfortunately, a tool failure results in one of the crew members receiving a lethal dose of radiation]]).
* The ''Literature/{{Rocheworld}}'' series features solar sails heavily. They are used for cargo vessels in the solar system, and the interstellar ship sent to the Barnard system uses a solar sail propelled by a laser on Mercury.
* The Martians in ''Literature/LastAndFirstMen'', being creatures whose bodies are composed of trillions of nanoscopic (not microscopic) viruses that communicate on a central nervous system of radiation, are able to conform their bodies into thin solid sheets that can traverse interplanetary distances. This is how they reach an Earth inhabited by the Second Men to begin their crusade to 'liberate' terrestrial diamonds which they believe are being handled sacrilegiously by the planet's dominate species, which the Martians also mistakenly think are the humans' radio devices.
* The arrival of an alien solar sail vessel in a human colonized system in ''Literature/TheMoteInGodsEye'' starts off the plot
* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* Solar sails are used as weapons in the ''Literature/RevelationSpaceSeries'' -- a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* In ''Literature/RoadToMars'', the [[MultinationalTeam multinational crew]] of the ''Ares'' receives orders from MissionControl to beat the Chinese ''Millennium Boat'' in a race to be the first humans on the red planet. TheCaptain of the ''Ares'' has the crew adjust the course to get dangerously close to the Sun in order to shave off a few hours and orders the crew into the living pod in order to shield everyone from increased heat and radiation. Just then, he gets a message from MissionControl, letting him know that there is a secret container aboard the craft, containing an experimental solar sail (the knowledge was kept secret in order to allow the company to file a patent on the new lightweight material). He is also told that a solar flare is about to occur just as they're passing the Sun. This will not only allow the sail to unfurl and give them the needed boost to beat the Chinese, but the magnetic field will also shield the craft from radiation, allowing the crew to go EVA to set up the sail ([[spoiler:unfortunately, a tool failure results in one of the crew members receiving a lethal dose of radiation]]).
* The ''Literature/{{Rocheworld}}'' series features solar sails heavily. They are used for cargo vessels in the solar system, and the interstellar ship sent to the Barnard system uses a solar sail propelled by a laser on Mercury.
Deleted line(s) 51,59 (click to see context) :
* Creator/RobertLForward[='=]s ''Literature/{{Rocheworld}}'' series features solar sails heavily. They are used for cargo vessels in the solar system, and the interstellar ship sent to the Barnard system uses a solar sail propelled by a laser on Mercury.
* Solar sails are used as weapons in Creator/AlastairReynolds' ''Literature/RevelationSpace'' trilogy - a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* [[TropeMaker The original]] StarfishAliens, the Elder Things introduced in Creator/HPLovecraft's ''Literature/AtTheMountainsOfMadness'' have fan-like wings that act as biomechanical ones allowing them to fly through space in the nude. [[BatmanCanBreatheInSpace They're apparently very good at holding their breath]]. (Although holding your breath in outer space would be a really bad idea as the air inside your lungs will expand and rupture your insides)
* In the Russian collaborative novel ''The Road to Mars'', the [[MultinationalTeam multinational crew]] of the ''Ares'' receives orders from MissionControl to beat the Chinese ''Millennium Boat'' in a race to be the first humans on the red planet. TheCaptain of the ''Ares'' has the crew adjust the course to get dangerously close to the Sun in order to shave off a few hours and orders the crew into the living pod in order to shield everyone from increased heat and radiation. Just then, he gets a message from MissionControl, letting him know that there is a secret container aboard the craft, containing an experimental solar sail (the knowledge was kept secret in order to allow the company to file a patent on the new lightweight material). He is also told that a solar flare is about to occur just as they're passing the Sun. This will not only allow the sail to unfurl and give them the needed boost to beat the Chinese, but the magnetic field will also shield the craft from radiation, allowing the crew to go EVA to set up the sail ([[spoiler:unfortunately, a tool failure results in one of the crew members receiving a lethal dose of radiation]]).
* Nathan Lowell’s [[http://www.solarclipper.com Golden Age of the Solar Clipper]] series has the titular ships using the magnetic sail variant to cruise out of star systems on the solar wind, then use a jump drive to reach the edge of the next system and a “gravity keel” to tack against the solar wind there.
* Creator/CordwainerSmith has interstellar solar sails in two stories, "The Lady Who Sailed ''The Soul''" and "Think Blue, Count Two." They're the basis of humanity's first expansion to other solar systems, in decades-long voyages with passengers in suspended animation.
* ''Avengers of the Moon'', by Creator/AllenSteele. The ''Creator/LeighBrackett'' makes use of an enormous lens located at a Lagrange point near the Moon to concentrate photonic energy against its sail. Smaller vessels use it as TheMothership to carry them to Mars. This becomes a plot-point when a saboteur tries to detach Literature/CaptainFuture's spaceship from its mooring cradle so they'll be [[DramaticSpaceDrifting stranded in space]], as a vessel with this form of propulsion can't just stop and pick them up again without becoming stranded themselves.
* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* The ''Odette II'', the yacht club's training vessel (and a former pirate ship), in ''Literature/BodaciousSpacePirates''.
* Solar sails are used as weapons in Creator/AlastairReynolds' ''Literature/RevelationSpace'' trilogy - a monolayer solar sail does wonders at killing the starships flying at 90% the speed of light. In an interstellar chase, a sail is released behind the ship being pursued, and a powerful laser pushes the sail back towards the pursuer; with the speed difference between the two objects, contact would result in instantaneous destruction.
* [[TropeMaker The original]] StarfishAliens, the Elder Things introduced in Creator/HPLovecraft's ''Literature/AtTheMountainsOfMadness'' have fan-like wings that act as biomechanical ones allowing them to fly through space in the nude. [[BatmanCanBreatheInSpace They're apparently very good at holding their breath]]. (Although holding your breath in outer space would be a really bad idea as the air inside your lungs will expand and rupture your insides)
* In the Russian collaborative novel ''The Road to Mars'', the [[MultinationalTeam multinational crew]] of the ''Ares'' receives orders from MissionControl to beat the Chinese ''Millennium Boat'' in a race to be the first humans on the red planet. TheCaptain of the ''Ares'' has the crew adjust the course to get dangerously close to the Sun in order to shave off a few hours and orders the crew into the living pod in order to shield everyone from increased heat and radiation. Just then, he gets a message from MissionControl, letting him know that there is a secret container aboard the craft, containing an experimental solar sail (the knowledge was kept secret in order to allow the company to file a patent on the new lightweight material). He is also told that a solar flare is about to occur just as they're passing the Sun. This will not only allow the sail to unfurl and give them the needed boost to beat the Chinese, but the magnetic field will also shield the craft from radiation, allowing the crew to go EVA to set up the sail ([[spoiler:unfortunately, a tool failure results in one of the crew members receiving a lethal dose of radiation]]).
* Nathan Lowell’s [[http://www.solarclipper.com Golden Age of the Solar Clipper]] series has the titular ships using the magnetic sail variant to cruise out of star systems on the solar wind, then use a jump drive to reach the edge of the next system and a “gravity keel” to tack against the solar wind there.
* Creator/CordwainerSmith has interstellar solar sails in two stories, "The Lady Who Sailed ''The Soul''" and "Think Blue, Count Two." They're the basis of humanity's first expansion to other solar systems, in decades-long voyages with passengers in suspended animation.
* ''Avengers of the Moon'', by Creator/AllenSteele. The ''Creator/LeighBrackett'' makes use of an enormous lens located at a Lagrange point near the Moon to concentrate photonic energy against its sail. Smaller vessels use it as TheMothership to carry them to Mars. This becomes a plot-point when a saboteur tries to detach Literature/CaptainFuture's spaceship from its mooring cradle so they'll be [[DramaticSpaceDrifting stranded in space]], as a vessel with this form of propulsion can't just stop and pick them up again without becoming stranded themselves.
* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
* The ''Odette II'', the yacht club's training vessel (and a former pirate ship), in ''Literature/BodaciousSpacePirates''.
* ''Series/ForAllMankind'': In Season 3, the Sojourner-1 Mars mission has a solar sail.
* TheReveal in ''Series/TheOuterLimits1995'' episode "[[Recap/TheOuterLimits1995S1E18TheMessage The Message]]" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
* TheReveal in ''Series/TheOuterLimits1995'' episode "[[Recap/TheOuterLimits1995S1E18TheMessage The Message]]" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
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* TheReveal in ''Series/TheOuterLimits1995'' episode "[[Recap/TheOuterLimits1995S1E18TheMessage The Message]]" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
* ''Series/ForAllMankind'': In Season 3, the Sojourner-1 Mars mission has a solar sail.
* ''Series/ForAllMankind'': In Season 3, the Sojourner-1 Mars mission has a solar sail.
* In ''TabletopGame/BattlefleetGothic'', Eldar Craftworld and Corsair starships are propelled by large solar sails. In game this is represented by Eldar ships having three movement speeds representing whether they are moving towards, away from or parallel to the sun, meaning that they have to tack like a sailing ship to get the best speed across the battlefield.
* In ''TabletopGame/BattleTech'', Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average Jumpship is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
* In ''TabletopGame/BattleTech'', Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average Jumpship is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
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* ''TabletopGame/JovianChronicles'' have solar sail and mag-sail craft as the primary bulk cargo carriers. The trade fleets operate from Mercury, because its central location next to the sun makes it a convenient stopping point. Solar sails are used in the inner systems, but only magsails are practical to reach the Jovian colonies and the asteroid belt. Past that, the solar wind is so diffuse that the Jupiter to Saturn trade relies on fusion-powered ships - fortunately there are big sources of hydrogen at both ends of that run.
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* ''TabletopGame/JovianChronicles'' have has solar sail and mag-sail craft as the primary bulk cargo carriers. The trade fleets operate from Mercury, because its central location next to the sun makes it a convenient stopping point. Solar sails are used in the inner systems, but only magsails are practical to reach the Jovian colonies and the asteroid belt. Past that, the solar wind is so diffuse that the Jupiter to Saturn trade relies on fusion-powered ships - fortunately -- fortunately, there are big sources of hydrogen at both ends of that run.
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* In ''TabletopGame/BattlefleetGothic'', Eldar Craftworld and Corsair starships are propelled by large solar sails. In game this is represented by Eldar ships having three movement speeds representing whether they are moving towards, away from or parallel to the sun, meaning that they have to tack like a sailing ship to get the best speed across the battlefield.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
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* The titular ship in ''Videogame/{{Seedship}}'' uses one.
* Starting in ''Videogame/SpaceEmpires IV'', you can place solar sails on your ships for bonus movement. They still work even if there isn't an actual star in the system, though.
* The ''Interstellar'' GameMod for ''Videogame/KerbalSpaceProgram'' is a roughly 2500m^2 square sail. It has a truly pathetic amount of thrust even when close to the sun, but it's fairly lightweight and has infinite delta-V, useful for trimming interplanetary orbits. Navigation with the solar sail is DifficultButAwesome, as its flight mechanics are completely different from traditional rockets and only receives thrust with the sun in direct line-of-sight.
* A random event in ''Videogame/{{Stellaris}}'' has you discovering a derelict solar sail ship. Sadly, you can't reverse-engineer the tech to use it yourself, but you do get some bonus engineering research off of it.
* Starting in ''Videogame/SpaceEmpires IV'', you can place solar sails on your ships for bonus movement. They still work even if there isn't an actual star in the system, though.
* The ''Interstellar'' GameMod for ''Videogame/KerbalSpaceProgram'' is a roughly 2500m^2 square sail. It has a truly pathetic amount of thrust even when close to the sun, but it's fairly lightweight and has infinite delta-V, useful for trimming interplanetary orbits. Navigation with the solar sail is DifficultButAwesome, as its flight mechanics are completely different from traditional rockets and only receives thrust with the sun in direct line-of-sight.
* A random event in ''Videogame/{{Stellaris}}'' has you discovering a derelict solar sail ship. Sadly, you can't reverse-engineer the tech to use it yourself, but you do get some bonus engineering research off of it.
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* Starting in ''Videogame/SpaceEmpires IV'', you can place solar sails on your ships for bonus movement. They still work even if there isn't an actual star in the system, though.
* In ''VideoGame/KingdomHeartsII'', the second visit to the Space Paranoids world has the party take the Solar Sailer from ''Film/{{Tron}}'' to the MCP's location for the final battle with it.
* The titular ship in ''VideoGame/{{Seedship}}'' uses one.
* Starting in ''VideoGame/SpaceEmpires IV'', you can place solar sails on your ships for bonus movement. They still work even if there isn't an actual star in the system, though.
* A random event in
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* In ''VideoGame/KingdomHeartsII'', the second visit to the Space Paranoids world has the party take the Solar Sailer from ''Film/{{Tron}}'' to the MCP’s location for the final battle with it.
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** The Gatekeepers use "solar sail material" to make Dyson Spheres, their word for which translates to "this was expensive to build."
** In one arc the crew encounter a small STL starship with a solar sail that "you could giftwrap planets with."
** In one arc the crew encounter a small STL starship with a solar sail that "you could giftwrap planets with."
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** The Gatekeepers use "solar sail material" to make Dyson Spheres, {{Dyson Sphere}}s, their word for which translates to "this was expensive to build."
buil.".
** In onearc arc, the crew encounter a small STL starship with a solar sail that "you could giftwrap planets with."with".
** In one
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* The ''WesternAnimation/BackToTheFutureTheAnimatedSeries'' episode, ''[[Recap/BackToTheFutureTheAnimatedSeriesS1E9SolarSailors Solar Sailors]]'' is mostly set on an interplanetary cruise ship powered by a solar sail.
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* The ''WesternAnimation/BackToTheFutureTheAnimatedSeries'' episode, ''[[Recap/BackToTheFutureTheAnimatedSeriesS1E9SolarSailors ''WesternAnimation/BackToTheFuture'' episode "[[Recap/BackToTheFutureTheAnimatedSeriesS1E9SolarSailors Solar Sailors]]'' Sailors]]" is mostly set on an interplanetary cruise ship powered by a solar sail.
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* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
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* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - -- LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore- -- it reentered the atmosphere and burned up as planned.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore
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* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
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* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - -- if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
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** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] launched in May 2015 and although battling problems and gaps in communication, it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). [=LightSail 2=] launched on 25th of June 2019.
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** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] launched in May 2015 and although battling problems and gaps in communication, it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). [=LightSail 2=] [=LightSail-2=] launched on 25th of in June 2019.2019, and entered the athmosphere in November 2022.
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** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
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** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfullylaunched in May 2015 and although battling problems and gaps in communication (space is hard), communication, it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 [=LightSail 2=] launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].2019.
** Update to this - The Planetary Society launched their Light-Sail probe successfully
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* The ''Odette II'', the yacht club's training vessel (and a former pirate ship), in ''LightNovel/BodaciousSpacePirates''.
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[[folder:Comics]]
* Highly obscure Creator/MarvelComics character Starhawk had these built into his spandex super-suit, one set one his back and a matching set on his head. Which is impractical and unlikely, [[RuleOfCool but...]]
* Highly obscure Creator/MarvelComics character Starhawk had these built into his spandex super-suit, one set one his back and a matching set on his head. Which is impractical and unlikely, [[RuleOfCool but...]]
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*
* The ''Odette II'', the yacht club's training vessel (and a former pirate ship), in ''Literature/BodaciousSpacePirates''.
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* ''Series/StarTrekDeepSpaceNine'' has Captain Sisko recreate an ancient Bajoran spacecraft with solar sails. Supposedly it made it all the way to a neighboring star system, though some characters doubt the voyage could be achieved at sublight speeds. [[spoiler:Turns out the sails can also catch tachyons in order to travel FasterThanLight.]]
* TheReveal in ''Series/TheOuterLimits1995'' episode "The Message" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
* TheReveal in ''Series/TheOuterLimits1995'' episode "The Message" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
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* The ''Series/StarTrekDeepSpaceNine'' episode "[[Recap/StarTrekDeepSpaceNineS03E22Explorers Explorers]]" has Captain Sisko recreate an ancient Bajoran spacecraft with solar sails. Supposedly it It supposedly made it all the way to a neighboring star system, though some characters doubt the voyage could be achieved at sublight speeds. [[spoiler:Turns [[spoiler:It turns out that the sails can also catch tachyons in order to travel FasterThanLight.achieve FasterThanLightTravel.]]
* TheReveal in ''Series/TheOuterLimits1995'' episode"The Message" "[[Recap/TheOuterLimits1995S1E18TheMessage The Message]]" is that the 1s and 0s the woman keeps furiously scribbling at 3:10 AM every night are a cry of help from an alien ship that is propelled by a solar sail. The ship is moving on a trajectory towards the Sun, much too fast for the solar sail to stop. They instruct the woman how to build a high-energy laser to push the craft onto a safer course. It works.
* TheReveal in ''Series/TheOuterLimits1995'' episode
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* Creator/RobertLForwards's ''Rocheworld'' series features solar sails heavily. They are used for cargo vessels in the solar system, and the interstellar ship sent to the Barnard system uses a solar sail propelled by a laser on Mercury.
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* Creator/RobertLForwards's ''Rocheworld'' Creator/RobertLForward[='=]s ''Literature/{{Rocheworld}}'' series features solar sails heavily. They are used for cargo vessels in the solar system, and the interstellar ship sent to the Barnard system uses a solar sail propelled by a laser on Mercury.
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* Creator/CordwainerSmith has interstellar solar sails in two stories, "The Lady Who Sailed ''The Soul''" and "Think Blue, Count Two." They're the basis of humanity's first expansion to other solar systems, in decades-long voyages with passengers in suspended animation.
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->"In frigid darkness they slept, and as they slept, the cold winds of light between the stars swept them onward, slowly..."
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[[/folder]]
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----
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* Jim Hawkings' sailboard and the RLS Legacy from ''WesternAnimation/TreasurePlanet'' are referred to as solar sails, but they have little in common with actual solar sails.
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* Jim Hawkings' Hawkins' sailboard and the RLS Legacy from ''WesternAnimation/TreasurePlanet'' are referred to as solar sails, but they have little in common with actual solar sails.sails—here they're seen as being pushed by "solar winds" much like sailing ships on oceans use planetary winds.
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* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Tron Legacy'' for bulk transport of [[spoiler:abducted programs]].
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* In ''Film/{{Tron}}'', a simulated vehicle called a Solar Sailer is stolen by two of the movie's protagonists to make a hasty exit from the facility where it just happens to have been under construction. To avert the need for steering, a Solar Sailer's path follows the path of whatever data beam it rides on. A much larger version is used in ''Tron Legacy'' ''Film/TronLegacy'' for bulk transport of [[spoiler:abducted programs]].
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* ''Series/ForAllMankind'': Season 3 has a Mars-bound ship with a solar sail.
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* ''Series/ForAllMankind'': In Season 3 3, the Sojourner-1 Mars mission has a Mars-bound ship with a solar sail.
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* ''Series/ForAllMankind'': Season 3 has a Mars-bound ship with a solar sail.
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[[folder:Role-Playing Games]]
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* In ''TabletopGame/BattlefleetGothic'', Eldar Craftworld and Corsair starships are propelled by large solar sails. In game this is represented by Eldar ships having three movement speeds representing whether they are moving towards, away from or parallel to the sun, meaning that they have to tack like a sailing ship to get the best speed across the battlefield.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
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[[folder:TabletopGames]]
* In ''TabletopGame/BattlefleetGothic'', Eldar Craftworld and Corsair starships are propelled by large solar sails. In game this is represented by Eldar ships having three movement speeds representing whether they are moving towards, away from or parallel to the sun, meaning that they have to tack like a sailing ship to get the best speed across the battlefield.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
[[/folder]]
* In ''TabletopGame/BattlefleetGothic'', Eldar Craftworld and Corsair starships are propelled by large solar sails. In game this is represented by Eldar ships having three movement speeds representing whether they are moving towards, away from or parallel to the sun, meaning that they have to tack like a sailing ship to get the best speed across the battlefield.
* ''TabletopGame/BattleTech'' Jumpships and Warships use jump sails to recharge their jump drives. The sails take a long time to set up and it takes a week to fully recharge the drives. It's worth noting that in this case the sails only act as basically giant flexible solar panels; any actual sublight ''propulsion'' worth mentioning is done via fusion rocket, it's just that the average [=JumpShip=] is essentially just a single FTL drive core with some station-keeping engines and quarters for the crew as an afterthought.
[[/folder]]
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* The ''Anime/MobileSuitGundamSeedDestiny'' ''Stargazer'' ONA has the "[[TitleDrop Stargazer]]" Gundam. It uses a Voiture Lumiere system as a magnetic sail. It is meant to be an unmanned probe controlled by a rudimentary AI for extrasolar exploration, though it can carry a couple of passengers/pilots if necessary. It also takes the Gundam about a month to make it from Venus to Earth using just the Sun's output for thrust (it rode a giant particle beam to get out to Venus in the space of a couple of minutes).
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* The ''Anime/MobileSuitGundamSeedDestiny'' ''Stargazer'' ''Anime/MobileSuitGundamSEEDCE73Stargazer'' ONA has the "[[TitleDrop Stargazer]]" Gundam. It uses a Voiture Lumiere system as a magnetic sail. It is meant to be an unmanned probe controlled by a rudimentary AI for extrasolar exploration, though it can carry a couple of passengers/pilots if necessary. It also takes the Gundam about a month to make it from Venus to Earth using just the Sun's output for thrust (it rode a giant particle beam to get out to Venus in the space of a couple of minutes).
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* The titular ship in ''Videogame/{{Seedship}}'' uses one.
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Common in [[MohsScaleOfScienceFictionHardness hard science fiction]], or as TechnoBabble for SpaceSailing starships.
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Common in [[MohsScaleOfScienceFictionHardness hard science fiction]], fiction, or as TechnoBabble for SpaceSailing starships.
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* At the end of ''The Nano Flower'' by Creator/PeterFHamilton, rather than [[WeComeInPeaceShootToKill destroy or be destroyed by humanity]], the alien organism leaves to find an uninhabited solar system, by shapeshifting into a solar sail 500 kilometers in diameter.
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* Count Dooku in ''[[Film/AttackOfTheClones Star Wars: Episode II]]'' uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
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* Count Dooku in ''[[Film/AttackOfTheClones Star Wars: Episode II]]'' ''Film/AttackOfTheClones'' uses a ship equipped with a (unrealistically small) solar sail to escape from a battle.
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[[folder:LiveActionTelevision]]
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[[folder:RealLife]]
* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the way there.]]
* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
[[/folder]]
[[folder:RolePlayingGames]]
* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the way there.]]
* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
[[/folder]]
[[folder:RolePlayingGames]]
to:
* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the way there.]]
* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
[[/folder]]
[[folder:RolePlayingGames]]
Added DiffLines:
[[/folder]]
[[folder:RealLife]]
* The billion-dollar interstellar travel company [[https://en.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the way there.]]
* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
[[folder:RealLife]]
* The billion-dollar interstellar travel company [[https://en.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the way there.]]
* The Japanese [[IcarusAllusion IKAROS]] ([[https://en.wikipedia.org/wiki/IKAROS Interplanetary Kite-craft Accelerated by Radiation Of the Sun]]) space probe was launched in 2010. It was the first spacecraft to use a solar sail as its main method of control (a traditional chemical rocket placed the probe on its Venus flyby trajectory) and was the first interplanetary solar sail spacecraft. The craft's journey to Venus was intended to test the sail's control system - LCD panels on the sail itself can adjust their reflectivity, giving the craft a method of attitude control. Cycling the panels on and off also allows the spacecraft to control its rotational speed. Since its launch in 2010, IKAROS has completed its original mission successfully and now orbits the Sun once every ten months, periodically waking up and transmitting data back to Earth.
* NASA's first attempt at launching a solar sail-powered craft was much less ambitious- the [=NanoSail-D=] mission was designed to test a solar sail in low Earth orbit. The first launch in 2008 failed, destroying the probe; however, a launch spare was modified and improved to become [=NanoSail-D2=], which was launched successfully in 2010, after IKAROS was launched. Unlike IKAROS, [=NanoSail-D2=] does not exist anymore - it reentered the atmosphere and burned up as planned.
** Although [=NanoSail-D2=] was NASA's replacement for [=NanoSail-D=], the original [=NanoSail-D=] mission was handed to the non-profit Planetary Society. [=NanoSail-D=] was renamed [=LightSail-1=], and although [=NanoSail-D's=] successor had been launched successfully in 2010, [=LightSail-1=] still awaits launch. The Planetary Society had earlier tried to launch in 2005 the first ever solar sail-powered spacecraft, Cosmos 1, but the launch vehicle failed to reach orbit.
** Update to this - The Planetary Society launched their Light-Sail probe successfully launched in May 2015 and although battling problems and gaps in communication (space is hard), it completed the mission successfully and entered the Earth's atmosphere in June 2015 (presumably burning in it). LightSail 2 launched on 25th of June 2019. Real time mission data can be seen here [[http://www.planetary.org/explore/projects/lightsail-solar-sailing/lightsail-mission-control.html]].
* Proposed as a far less dangerous method of dealing with a [[ColonyDrop meteor heading towards Earth]] than [[DeusExNukina launching a giant nuke at it]]. A robot spacecraft would attach a solar sail which would gradually pull it off course - if the meteor is caught early, even the minuscule acceleration from a solar sail is enough to change its trajectory substantially by the time it comes close to Earth.
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* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the ways there.]]
to:
* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the ways way there.]]
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None
Added DiffLines:
* The billion-dollar interstellar travel company [[https://en.m.wikipedia.org/wiki/Breakthrough_Starshot Breakthrough Starshot]] aims to send solar sails to our nearest star, Alpha Centauri, by sending unmanned probes with light propelled sails to the star system using lasers at 20% the speed of light. Because of the distance between Sol (our sun) and Alpha Centauri, it will take about 20 years to reach it. The probes will take pictures of planets in Alpha Centauri while never landing on any of them. It is planned to send manned crafts to Alpha Centauri after enough probe observations of atmospheric conditions. Since this manned craft will probably not launch until a decently far future, there is a possibility [[HumanPopsicle cryogenic technology]] could have been invented to allow [[SleeperShip astronauts or potential colonists to remain in stasis on the ways there.]]
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Correcting and expanding the information on electric and magnetic sails
Changed line(s) 15,16 (click to see context) from:
A close cousin is the magnetic sail, a system that uses a huge conductor (kilometers of superconducting wire or a cloud of ionized gas) and a magnetic field to steal kinetic energy from passing solar wind. Since the charged particles streaming from the sun are more massive than photons, this system delivers more thrust, but it requires input energy, and isn't as visually interesting since the "sail" is invisible.
to:
A close cousin is the magnetic electromagnetic sail, a system any of several similar systems that uses use a huge conductor (kilometers or set of conductors (like kilometers of superconducting wire or a cloud of ionized gas) and a magnetic an electromagnetic field to steal kinetic energy from passing solar wind. Since wind, the corona of charged particles constantly streaming from a star. While the sun are reflected sunlight used by a reflective solar sail provides orders of magnitude more massive push per surface area in the inner parts of a solar system, the working area of an electromagnetic sail is a [[DeflectorShields "virtual sail" of electromagnetic force]] generated by a comparatively minuscule amount of material, and the average energy density of solar wind remains fairly potent far into the outreaches of a solar system. The net result is that these systems make up for the lower inner-system energy density by sheer size and operating range, while still being far lighter than photons, this system delivers more thrust, but it requires a reflective solar sail, at the cost of requiring input energy, and isn't as visually interesting since the invisible "sail" being less visually interesting. An additional advantage for these systems, or hybrid systems mixing electromagnetic and solar sails, is invisible.
that tacking and breaking ''are'' possible through a rare case of [[ReversePolarity reversing the polarity]] actually being meaningful- because manipulating the orientation and strength of the field alters the direction and intensity of force between interacting electromagnetic fields, a keel's opposing drag can be replicated via secondary sails or "kite-tail"-type structures tuned to work at angles or opposition to the primary sail(s).
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Frickin Laser Beams entry amended in accordance with this Trope Repair Shop Thread
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For interstellar voyages, the ship is usually propelled by a giant [[FrickinLaserBeams laser cannon]] in space shooting at the sail.
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For interstellar voyages, the ship is usually propelled by a giant [[FrickinLaserBeams [[EnergyWeapon laser cannon]] in space shooting at the sail.
