112 How does a species who cannot distinguish left from right build their cities? 2017-05-23T11:48:01.863

110 How can a race of eldritch abominations help humanity? 2017-08-14T14:10:48.243

108 How many humans can I abduct without getting noticed? 2015-08-22T07:00:35.783

100 Would intelligent life evolve any other body plan than humanoid? 2015-09-07T08:07:31.927

98 Would relatively primitive people really confuse technology with magic? 2015-12-29T06:38:26.960

87 Is there a scientific explanation as to why aliens should look similar to us? 2014-09-28T13:46:22.090

83 My star will explode as a supernova. What can I do in order to ensure that my planet survives that? 2016-07-15T23:40:38.497

76 What is the fastest way for a robot with superhuman capabilities to make money? 2016-07-21T06:20:10.407

74 How does the government cover up alien crash landings? 2015-08-26T10:30:05.320

74 Would we find alien music meaningful? 2016-11-07T10:52:54.900

72 Could aliens colonize Earth without realizing humans are people too? 2016-12-22T18:09:03.583

72 How do I keep my slaves happy? 2017-03-23T01:00:00.897

71 How do I make an alien technology feel alien? 2016-11-09T20:48:58.260

67 Why Would Aliens Enslave Humans? 2017-04-11T23:06:41.573

59 What does Earth have to offer for an alien civilization 2016-07-21T02:12:03.930

58 Could a human engineer comprehend alien electronics? 2015-06-17T17:05:33.883

58 Galactic Law Enforcement - Handcuff Alternatives 2018-05-30T00:16:34.713

56 The Benign Apocalypse 2015-06-04T21:34:53.043

56 How far away would an alien civilization need to be for us to not notice them? 2016-04-06T17:51:16.730

53 Lifeform - resistant to gunfire but vulnerable to melee 2015-03-26T11:07:44.347

52 Fallout from aliens destabilizing economy by counterfeiting all global currencies? 2017-02-05T19:36:07.577

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

50 Tactics to prepare for an alien invasion when nobody will believe you 2016-08-25T20:18:40.710

50 Alien number systems - Is the decimal system special? 2016-12-07T22:28:33.830

45 What are some tactics for the ancient Greeks to defeat alien invaders? 2015-06-10T00:06:56.910

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

43 How to fight a kitty army? 2015-08-14T13:36:40.113

41 Why would super-advanced aliens go undercover as humans? 2016-07-10T04:00:46.737

40 How would a human livestock facility run by aliens operate? 2015-10-01T16:13:11.400

39 Farming the Abyssal Plain? 2017-11-06T03:02:08.380

39 Would it be easier to colonise a living world or a dead world? 2019-09-29T20:59:19.720

37 Creature that swims in the solid ground 2017-08-13T20:23:11.703

36 What could prevent us from making alien technology if we had the schematics? 2019-01-18T10:30:59.810

34 What kind of society and morals would an alien species evolved from solitary carnivores have? 2017-02-11T18:26:34.910

33 Why might a society perceive erasing from history as worse than death? 2018-07-18T04:35:21.780

32 Is mathematics a truly universal language? 2015-08-18T16:57:50.943

31 Aliens are on their way. What can cause them to not understand us? 2016-05-20T09:18:47.763

31 Strategy to make extraterrestrials fear us 2016-07-14T18:39:47.803

30 What would the real Miss Universe pageant be like? 2014-11-18T21:29:23.317

30 Tank-Fighting Alien 2016-11-05T18:01:10.893

30 Why would aliens ally with humans against other humans? 2017-02-07T14:19:44.753

29 Would we ever find an alien space probe? 2015-07-06T19:09:39.897

29 What could be a probable reason for an alien race to want to non-violently annex Earth? 2015-07-13T19:46:31.287

29 How do I wage war against a collective consciousness? 2016-08-22T18:08:48.187

28 How would interstellar internet work? 2014-11-22T12:19:00.270

28 Fighting Off an Alien Invasion 2014-11-24T13:37:02.527

28 Why would an alien race have developed space travel and yet not have other technology? 2016-04-27T15:25:31.610

28 Why didn't we detect that exoplanet before? 2017-12-04T11:48:43.073

28 How can I launch a projectile to hit something in orbit, using only geological structures and power sources? 2019-02-03T17:18:52.397

28 A fast aquatic predator with multiple eyes and pupils. Would these eyes be possible? 2019-10-06T04:28:35.683

26 Recognizable natural numbers for alien message? 2017-02-05T06:44:12.197

26 How would a creature see with two pupils in each eye? 2018-03-19T20:57:35.723

25 Can we have a meaningful cultural exchange with aliens if we never meet? 2016-01-18T17:30:13.673

25 How much time does Earth need to repel interstellar attack? 2018-06-27T06:54:04.813

25 How to prevent humanity from using alien spaceships and technology exclusively? 2019-12-16T03:00:15.997

24 Smiling at aliens - bad idea? 2015-11-27T17:02:06.393

24 What makes a monster or creature scary? 2016-01-09T03:27:16.967

24 Is there a way to translate a language that includes words for things we don't know? 2017-03-08T15:28:39.027

24 Scientific Naming Conventions for Alien Creatures 2017-10-15T18:02:32.500

24 Reality Check: Are these Honey Mouths and Thorn Shredders realistic? 2018-02-07T07:34:37.770

23 Making the First contact 2014-12-20T20:30:02.740

23 A sentient carnivorous species trying to preserve life. How could they find a new food source? 2019-09-30T00:40:18.983

23 How to tell if the entire Earth is just a copy? 2020-01-05T07:06:20.863

22 Maggots at a party... How would alien races dine together? 2014-12-08T14:54:10.760

22 Maximum size of an exoskeletal creature 2016-10-03T08:59:10.843

22 How long would it take to nuke an alien spaceship in orbit? 2018-11-21T13:03:09.460

21 What would hinder the exploration of an alien outpost? 2015-03-13T10:19:07.550

21 Blind spot in the Solar System 2015-08-24T10:55:58.587

21 How alien can a language be - grammar? 2015-11-24T16:45:49.640

21 Pheromone-based language 2016-06-30T06:36:13.323

21 Aliens doing algebra 2016-08-10T15:15:38.040

21 Reasons an advanced alien race might want to share technology with humanity? 2016-09-01T04:00:33.280

21 How to enslave a species that can transport themselves anywhere on the planet instantaneously? 2016-09-04T22:34:01.897

21 Metal that glows when near pieces of itself 2019-08-18T06:07:43.583

21 Why would Earth be long-term unsuitable for an advanced alien species that's already colonized it? 2019-11-22T23:14:34.947

20 Aliens and Us: Would they have any reason to interact with us? 2017-02-28T05:33:17.500

20 At what minimal technological level would the inhabitants of a binary planet system need to be to communicate with each other effectively? 2017-06-02T17:32:45.930

20 Can an r-selection alien build a civilization? 2017-08-25T15:39:20.723

20 Psychological effects of non head-based killing techniques 2017-11-21T06:05:17.740

20 Aquatic aliens and the effects of acceleration in space-flight 2018-11-20T22:15:31.010

20 What could a technologically advanced but outnumbered alien race do to destroy humanity? 2019-10-17T23:06:56.643

19 Brown Dwarves: Dyson Spheres in disguise? 2015-01-12T15:00:27.527

19 Alien message: arrows and sequence order 2017-02-13T11:39:37.627

19 Would an alien lifeform be able to achieve space travel if lacking in vision? 2019-04-12T14:23:30.837

18 How would aliens in orbit know that communications from Earth are legitimate "official" communications? 2015-03-04T07:57:12.297

18 How to name aliens? 2016-07-22T10:48:15.500

18 Can we expect machines as extraterrestrial forms of life? 2016-08-18T21:59:29.200

18 How do you conduct xenoanthropology after first contact? 2019-04-07T23:08:12.483

17 How could a town/city be annihilated without anyone knowing? 2015-04-13T09:56:07.797

17 Benevolent aliens will help us all- on one condition. Can we end all wars? 2016-01-29T03:48:19.530

17 Is multigenerational memory feasible 2016-07-20T18:55:07.467

17 What scientists would go on an research expedition to an alien world? 2017-11-08T02:29:34.287

16 What could make an insect race intelligent? 2014-11-23T17:39:48.160

16 Could a lingua franca be possible on a galactic scale? 2015-06-05T05:32:22.167

16 OK, I cannot fake the Mars landing. Can I fake Martians? 2015-08-23T13:14:20.357

16 Why would two humanoid species be physically unable to touch each other? 2017-11-24T15:29:56.460

16 Could aliens with a WW2 technology level steal and use technology from current day humanity? 2018-01-22T21:08:00.373

16 How would we fare against an interstellar RKKV Attack? 2018-06-26T02:05:47.793

15 If an elder race has seen all and done all, what one of its individuals could aspire to? 2014-12-18T16:49:01.423