114 In space, do "shipping lanes" make sense? 2014-09-16T19:03:12.937

91 How to keep humans pilots instead of AI in sci-fi future? 2015-05-11T14:45:42.990

87 0g pool: can I keep a big ball of water in space? 2016-09-08T15:07:53.790

85 Would a submarine make a great spaceship? 2015-08-27T16:59:52.713

79 Could astronauts find their bearings in the Universe after being transported 6 gigalightyears from Earth? 2017-12-03T21:11:48.977

70 Eternal space battle around a planet. But why? 2018-12-04T07:52:33.410

68 Why does the Conjoined Alliance of Space Travellers keep producing red uniforms? 2017-10-16T10:17:03.257

65 How would an astronaut conclude he's on Earth, but 600 million years in the future? 2017-06-17T00:07:44.217

63 I don't want to live on this planet anymore 2016-08-24T12:51:45.470

62 An Earth-like planet is found in another solar system. What are the top priorities after landing in order to create a self-sustaining colony? 2020-01-14T11:45:39.267

61 How could a planet have a sky without stars at night? 2019-01-02T21:18:36.153

60 How to solve the old 'gun on a spaceship' problem? 2016-10-11T02:09:16.847

59 How Would a Post-Planetary Civilization Measure Time? 2015-04-14T01:30:34.890

59 How do I make a space battle both realistic, with physics in play such as no sound and weird motion, but also very epic and intense still? 2018-09-26T19:56:10.950

59 My perfect evil overlord plan... or is it? 2019-05-07T17:15:32.290

57 Where in the solar system is the most viable place to put my colonists, after Mars and Luna? 2014-10-13T09:41:00.543

57 Is there a way to create a bomb to destroy a star? 2016-02-16T22:43:29.070

57 How would someone hide an asteroid in the void of space so only they could find it? 2016-06-23T15:47:30.223

56 Is space piracy orbitally practical? 2016-11-30T18:44:53.720

55 Building a bridge to the stars 2016-01-26T12:41:57.677

53 Planetary Scale Artworks 2014-12-16T12:56:39.440

51 If an FTL spacecraft entered Earth orbit, how long would it take for humans to build a FTL spacecraft? 2016-02-16T18:14:44.363

51 Implications of Newtonian universe 2016-03-24T10:04:34.723

51 Could an advanced alien race prevent the death of the universe? 2018-07-18T17:07:08.517

47 What if the speed of light were 100 times higher? 2015-02-12T02:26:32.280

46 Could you claim a space station as a country? 2015-08-24T13:31:28.287

46 Society rules for marriages and love on multigeneration ship 2016-01-19T14:13:03.180

45 Earthborn Inferiority 2017-09-25T13:47:28.860

45 What shape of a ship would be most effective in real life space combat? 2018-03-26T12:59:01.543

45 What would happen if the Earth struck a tiny but immovable object 2018-05-23T13:17:55.513

45 Is it harder for an intelligent octopus to live on land, or a human to live in space? 2019-01-15T22:14:18.237

42 What distinction could there be between space torpedoes and space missiles? 2017-01-20T02:10:40.520

42 How to prove that the solar system isn't inside of a localized physics bubble? 2017-03-13T23:35:32.193

42 What's the largest body in the solar system that you could destroy without endangering humanity? 2017-05-29T02:50:02.060

42 Why would a previously spacefaring civilization become unable to build another interstellar ship? 2019-01-03T11:29:08.840

41 Is there a scientifically sound faster-than-light travel system for a spaceship? 2014-09-21T08:48:22.837

40 Is there any reason not to eat food that's been dropped on the surface of the moon? 2019-03-26T12:42:06.243

39 What Time is it IN SPACE? 2015-03-04T18:14:38.597

39 Do we actually have the technology for a permanent Moon outpost? 2016-04-04T13:16:54.897

38 How would space battles alter combat tactics? 2015-02-05T15:11:51.537

38 How can I explain a one-shot, slow-to-reload laser sidearm? 2017-08-23T10:49:58.727

37 Can a space-faring robot still function over a billion years? 2019-03-05T17:42:42.897

36 How can I destroy a gas giant planet? 2015-02-12T14:12:15.610

35 Precision Destruction by a Cosmic Being (Or how to destroy StackExchange from space) 2014-10-30T11:56:04.563

35 Can I build a space elevator from superman's hair? 2015-05-19T10:07:01.373

34 How can I indicate a third dimension on a map of outer space? 2015-06-08T17:38:07.650

34 Economic reasons to put people on Mars? 2016-08-23T15:44:59.500

34 How can you find where the Earth is, if you were lost near Neptune? 2017-02-16T15:26:27.517

34 Why would astronauts go to space to mine asteroids? 2017-09-19T02:26:47.717

33 Do different star systems experience time differently? 2014-12-04T17:46:38.220

33 What are the effects of a planet staying long-term inside of a nebula? 2015-04-16T16:37:05.843

33 How are there so many species on the space station 'A long way from anywhere V'? 2016-12-19T11:43:18.733

33 Are external lights on spaceships even necessary? 2017-11-14T03:25:06.510

32 Can we 'beam' energy from the moon? 2014-10-30T20:29:29.530

32 What would skies look like on Worlds inside Nebulae? 2014-12-02T11:06:10.883

32 Could plants spread their seed to other planets? 2015-02-26T12:01:50.773

32 How would lighthouses work in space? 2016-03-10T16:47:05.583

32 Which goods make sense to transport over interstellar distances? 2016-06-27T11:54:33.753

31 What software can prototype a planetary system? 2014-10-09T11:20:15.927

31 On the immediate effects of a small, short term black hole 2014-10-16T18:38:39.817

31 What would be the consequences for Earth if the moon disappeared? 2015-04-20T05:00:16.020

30 What could restrain post-singularity societies from spreading across the Galaxy? 2014-12-03T10:31:13.783

30 Is Asteroid Harvesting economic? 2014-12-08T17:39:50.343

30 What would block a planet from seeing the stars? 2016-06-27T18:15:58.870

30 Is it possible to rule a galaxy without mastering teleportation? 2018-09-07T15:38:55.137

29 Is there anything that would accelerate the death of the sun? 2015-05-18T17:40:33.163

29 Creating a realistic world(s) map - Stars 2015-08-20T18:54:31.173

29 What warning labels could you see on products to be used in space? 2016-12-21T01:03:11.763

29 World with a different sun every day, and random days with no sun 2017-03-27T16:43:41.510

29 5km artificial planet, with same gravity as on Earth 2018-07-04T17:31:04.250

29 How could a planet have one hemisphere way warmer than the other without the planet being tidally locked? 2019-09-03T14:26:38.377

28 Could a civilisation exist as 'space-nomads'? 2015-01-26T10:16:29.160

28 How would one weaponize a black hole? 2015-03-12T16:32:37.400

28 Skydiving... From a space station 2015-10-17T23:40:38.833

28 Why might a planetary recon craft need to be manned? 2016-07-12T02:18:21.390

28 Does it make sense for these space ships to have turrets? 2016-11-01T14:57:08.283

28 Could burning debris keep burning in space? 2017-06-08T09:35:26.260

28 Justification of physical currency in an interstellar civilization? 2019-05-06T02:42:20.363

28 How likely are Coriolis-effect-based quirks to develop in starship crew members? 2019-05-08T11:50:28.650

28 Best place on Earth to fake being on a distant planet? 2020-02-22T22:44:16.373

27 What physical and social effects could two stars cause? 2014-09-17T05:43:58.427

27 How to avoid objects when traveling at greater than .75 light speed. or How Not to Go SPLAT? 2014-12-11T14:10:15.090

27 How can a pirate board a spaceship without teleportation? 2015-04-02T10:06:56.697

27 Is it worth colonizing a planet that travels near the speed of light? 2016-06-21T21:11:27.533

27 What would the effect be on Earth if Mars disappeared? 2016-08-03T08:56:53.990

27 Building a road to escape Earth's gravity by making a pyramid on Antartica 2019-05-31T08:51:37.493

27 How could humans reach distant stars and still stay as a united government if you can't use faster than light travel 2020-02-26T20:02:56.363

26 How large does a spacecraft need to be to be visible from the surface of the Earth at 400 km altitude? 2014-11-07T09:40:13.647

26 How to make food last indefinitely 2016-05-28T12:37:33.047

26 Can I send S.O.S in space with just a conventional cellphone? 2016-09-22T06:50:33.990

26 How should fledgling planet colonies deal with supply crews suffering from barophobia (fear of gravity)? 2018-03-27T10:41:31.400

26 Can a habitable world exist that would orbit in and out of a nebula? 2018-03-29T04:04:43.407

26 Reality of glass (or some sort of transparent composite) windows on spaceships 2018-06-19T12:36:59.733

25 Assistance to fight off a silicon-based lifeform 2014-10-07T17:28:04.753

25 Precious Materials in a Galactic Empire 2014-12-09T14:13:22.217

25 Reformatting Death Stars as powerful telescopes 2015-01-08T06:48:56.120

24 How long before we're stuck on Earth due to Space Debris? (Kessler syndrome) 2015-02-10T02:29:44.217

24 Equatorial icecaps and polar jungles a fantasy or reality? 2015-07-29T21:52:38.147

24 Which gas giant of the solar system could humanity mine and for what resource? 2016-12-08T08:28:43.973