134 Why are there no toilets on the starship 'Exciting Undertaking'? 2016-12-06T07:42:10.480
123 Why would giant mechs use melee weapons? 2016-08-21T11:39:42.187
122 What vehicle would be the best one to start a >1000 km travel in a post apocalyptic zombie situation? 2018-07-23T14:15:11.797
116 Which major solar system body could most realistically be artificial? 2017-03-18T14:41:10.760
100 Would intelligent life evolve any other body plan than humanoid? 2015-09-07T08:07:31.927
89 How do you check if a room behind a door aboard a spaceship has an atmosphere/pressure? 2017-10-22T13:59:39.413
86 How to monetize free energy without revealing its existence? 2017-07-10T10:57:54.843
76 What is the fastest way for a robot with superhuman capabilities to make money? 2016-07-21T06:20:10.407
73 Why would a decision making machine decide to destroy itself? 2016-12-17T21:49:01.327
70 Eternal space battle around a planet. But why? 2018-12-04T07:52:33.410
68 How do we tell if we're living in a virtual reality world? 2016-08-03T13:09:13.520
68 Mineral that explodes when cooling down 2017-05-02T18:34:21.293
64 Where can I transform without being noticed? 2016-12-15T15:28:58.223
63 Is there any plausible reason for a robot's eyes to glow? 2016-08-22T01:25:38.273
61 What realistic way could limit an FTL drive to only travelling between stars? 2017-06-03T10:01:12.690
59 Why can't spaceships go underwater? 2018-03-05T21:19:35.070
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
58 Dangerous pending task in world managing A.I 2018-05-03T09:52:08.083
58 Galactic Law Enforcement - Handcuff Alternatives 2018-05-30T00:16:34.713
57 What is valid evidence in a world with perfect CGI technology? 2016-08-01T12:03:44.400
55 Why do people in Cryogenic sleep not wear clothes? 2016-09-12T11:48:22.343
54 Would a fighter pilot with an invincible space ship be able to conquer the galaxy? 2016-01-27T18:37:59.267
53 What all stops working when I pause time? 2015-11-18T20:41:52.013
52 What possible scientific reasons could there be for a vampire to only be killable via wooden stake to the heart? 2017-08-25T08:35:01.403
51 What kind of recurring phenomena could cast darkness on a planet for days/weeks at a time? 2017-03-03T04:14:11.617
50 Tactics to prepare for an alien invasion when nobody will believe you 2016-08-25T20:18:40.710
49 Stopping time, by speeding it up inside a bubble 2016-10-09T17:37:38.193
49 Why is ground warfare smaller scaled than space warfare? 2018-02-01T19:34:47.510
49 Why would people still use pump-action guns in the future? 2018-07-18T21:30:47.767
48 How to explain the use of high-tech bows instead of guns 2016-10-25T04:55:00.880
48 How would you know your floating island was losing altitude? 2018-02-15T14:17:40.940
47 Let’s say a 1 ton (US) sphere of tungsten moving at 99.99% the speed of light hits earth, what happens? As specific as possible 2018-12-04T07:24:43.883
45 Why do aliens who visit us have higher tech than us? Couldn't they wait for us to have it too? 2017-02-06T14:24:08.577
45 What is my malfunctioning AI harvesting from humans? 2019-08-09T22:34:43.580
44 How to convey the scale of my humanoid without science or units? 2016-09-13T10:40:12.787
42 What distinction could there be between space torpedoes and space missiles? 2017-01-20T02:10:40.520
42 Why are escape pods used instead of transporters whenever an alarm sounds to abandon the ship? 2017-09-25T05:32:15.257
41 So we glassed it, now what? 2017-10-08T11:25:10.067
41 What could be the right powersource for 15 seconds lifespan disposable giant chainsaw? 2019-04-09T09:51:50.897
41 Justifying Affordable Bespoke Spaceships 2019-06-15T09:58:05.787
40 How would one destroy a black hole? 2016-02-20T23:30:20.190
39 Why would a civilisation choose to inhabit a single enormous vessel instead of maintaining interstellar colonies? 2016-07-18T14:19:25.290
38 What weapon of mass destruction could theoretically vaporize a whole solar system? 2018-03-21T21:34:53.087
38 Evidence of spacetime anomaly in local geology? 2018-05-01T15:42:20.783
37 Creature that swims in the solid ground 2017-08-13T20:23:11.703
37 How do I keep the government from detecting my flying car? 2018-11-28T09:46:25.170
37 Can a space-faring robot still function over a billion years? 2019-03-05T17:42:42.897
36 How might a collective such as The Borg develop? 2016-05-05T06:10:01.523
36 How many plants does it take to breathe? 2016-08-31T14:51:19.303
36 What kind of realistic ranged weapons would be effective in spaceship combat? 2016-09-19T13:23:04.373
35 Is there a liquid that could protect a human inside it from impact? 2018-04-16T20:23:48.677
35 An object that is gold in one specific area but becomes worthless if you leave that area? 2018-12-03T16:30:51.353
35 Are dead worlds a good galactic barrier? 2019-10-08T16:55:57.717
34 What kind of society and morals would an alien species evolved from solitary carnivores have? 2017-02-11T18:26:34.910
34 Dyson sphere with mirrors 2017-06-06T06:50:08.400
34 The Heisenberg Uncertainty Ray - A Hyper-Scanning Doomsday Weapon 2018-12-02T07:51:56.030
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
33 How to replace a fictional element to the periodic table? 2018-02-07T22:48:11.123
33 What would be a legit sounding medical term for Spontaneous Human Combustion? 2020-01-29T13:34:51.180
32 Is mathematics a truly universal language? 2015-08-18T16:57:50.943
32 Which fast STL drive could not be weaponized or results in perpetual motion? 2016-06-17T15:36:22.460
32 Which goods make sense to transport over interstellar distances? 2016-06-27T11:54:33.753
32 What would be the most effective melee weapon against heavily armored opponent? 2016-08-25T15:15:06.293
32 In a post-apocalyptic future planet where robots are the only sentient life... why would they use wild-west and WW2-era tech? 2017-11-09T19:40:06.043
32 Keeping a retro style to sci-fi spaceships? 2019-04-11T08:45:28.073
31 What society might survive the 3 generation rule 2015-07-09T23:38:16.697
31 How to effectively slow down a ship about to shoot through the Solar System at 0.6c? 2016-04-25T14:24:47.760
31 How to avoid FTL as a plot device? 2016-07-14T22:42:27.880
31 Starships without computers? 2019-08-18T08:08:07.803
31 What caused the end of cybernetic implants? 2019-08-29T12:36:51.563
30 How would you avoid making the ability to join a hive-mind very overpowered? 2016-07-22T15:21:25.063
30 Are there any structural materials suitable for production underwater? 2018-04-18T09:47:13.520
30 Is self-awareness or consciousness actually an evolutionary disadvantage? 2019-12-16T15:47:20.837
29 Humanity after 100 million years? 2016-07-25T22:06:03.773
29 When my city is miles high, where do the utility lines go? 2018-01-26T02:35:22.847
29 Would it be possible to accidentally nuke ourselves? 2018-02-13T09:36:52.960
29 If antimatter were common starship fuel, what could prevent it from being commonly weaponized? 2018-08-31T15:47:49.533
29 Is it possible to perform surgery on your own spine? 2018-11-27T02:02:12.717
28 Why might a planetary recon craft need to be manned? 2016-07-12T02:18:21.390
28 How do massive starships levitate? 2017-03-04T12:55:10.533
28 Prosecuting crime when the means used to commit it are far beyond current understanding 2017-09-20T13:33:20.080
27 How do I make a server of a virtual world indestructible? 2017-05-10T14:07:36.307
27 How could a humanist civilization favor the selfless? 2017-07-20T11:10:51.983
27 If a person had control of every single cell of their body, would they be able to transform into another creature? 2019-05-25T15:09:28.920
27 Plausible explanations as to why an advanced sci-fi species can't reproduce? 2020-01-19T00:29:52.440
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 to make food last indefinitely 2016-05-28T12:37:33.047
26 New tech, old clothes 2016-10-13T12:26:38.387
26 Realistic 'hacks' that programmer may exploit in a brand new FTL comm system that was not securely written? 2017-06-26T19:11:54.843
26 Do antenna farms on spacecraft make any sense or are they purely aesthetic? 2018-10-18T22:39:45.703
26 How do I scientifically explain a specific type of wood piercing through armor when not even bullets can? 2018-12-27T15:45:25.703
26 Justification of the trope that mining tools are tougher than military equipments 2020-01-20T10:47:24.643
25 Kaijuu-like monsters killing humans: What is their viable reason to do so? 2016-08-27T08:50:02.233
25 How much time does Earth need to repel interstellar attack? 2018-06-27T06:54:04.813
25 Moving between levels in a gigantic tower-world? 2018-08-01T13:45:21.077
25 How do you non-catastrophically reduce the mass of the Sun by half? 2018-09-26T15:43:22.720
25 Why Laser "Guns"? 2019-01-03T13:56:55.627
25 Moonlight bright enough to see by 2019-10-09T15:33:53.450