104 This sword is forged from meteorite iron - but how is that any good? 2018-01-23T15:13:20.380

96 What could make a star green? 2016-12-12T15:18:18.757

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

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

48 How would a Martian colony be able to celebrate Christmas? 2014-12-04T15:01:54.587

46 What happens if the sun disappears and then reappears some days later? 2014-10-15T13:27:00.190

44 Could two planets follow the same orbit and never "see" each other? 2018-01-19T19:46:20.080

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

30 Why might a valued mineral be only found on one planet? 2017-08-16T13:01:57.343

29 Can a planet have a day that's always longer than night? 2018-12-30T20:46:59.463

28 Nine Different Earths in One System--How to Make That Possible 2015-10-05T16:51:15.917

25 How do you non-catastrophically reduce the mass of the Sun by half? 2018-09-26T15:43:22.720

24 How would interplanetary stock-exchanges work? 2017-02-06T14:29:24.557

23 How would Earth-Mars trade work with a Musk-like colony? 2014-10-05T13:33:05.837

23 What are the possibilities of a dwarf planet orbiting opposite Earth's orbit? 2015-01-13T13:59:17.783

23 What could cause the Earth to be so endangered that mankind needs to relocate to another system? 2017-04-20T09:29:22.880

22 How would an advanced civilization have constant communication between planets? 2017-01-13T11:50:28.903

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

21 What are the main problems with beaming light from the Sun to Saturn? 2017-01-12T16:07:36.787

20 How would the sudden destruction of Earth affect other planets within the Solar System? 2014-12-15T17:31:04.667

20 Initial conditions for a fluorine hellscape 2017-05-11T03:26:44.597

18 What would be the first thing humans would mine on Jupiter? 2016-09-02T17:21:35.780

18 How short can Milankovitch Cycles be on a world with a stable orbit? 2017-10-24T13:02:01.617

17 How do date/time systems work for an entire solar system? 2014-10-14T17:01:12.680

17 Starbuilding: What is lacking in the logic behind Cosmos 2 star system generation algorithm? 2016-05-05T12:00:08.287

17 How difficult would it be to turn the Asteroid Belt into a single body? What's the best method? 2019-01-24T19:05:47.450

16 Are there any software tools available to map the solar system hundreds of years from now? 2018-12-12T04:04:14.163

15 Hiding a solar system in a nebula 2019-07-01T17:49:15.243

14 Radiation Levels and Effects on Planet with 27 Suns 2018-07-24T13:58:05.620

14 Plausible reason for Earth not be able to get updates about terraforming on Mars? 2018-10-07T22:39:57.673

13 Impacts of a stellar Jupiter 2014-10-19T17:52:14.270

13 Where can I find data on real world extrasolar planets, to use as inspiration for my imaginary world? 2016-05-21T06:18:10.717

13 What trade goods would spacers be able to offer Earthlings? 2016-08-04T13:45:32.080

13 How to protect the Earth from the stellar evolution of the Sun? 2016-09-22T13:18:53.923

13 Is my Solar System scientifcally possible? 2017-12-18T23:35:40.987

13 Is there a habitability zone between the primary and secondary stars of a binary star system? 2018-02-23T02:13:51.470

13 Can two stars orbit each other but each have their own planets in stable orbits? 2018-05-10T20:00:29.160

13 Solar recycling or: How to keep your star from dying 2018-12-18T20:53:55.830

12 How big a population can the solar system support considering only power and living space? 2017-05-30T09:32:59.377

12 How close could another solar system be without adversely affecting our own? 2019-01-04T13:26:54.553

12 Make solar eclipses exceedingly rare, but still have new moons 2019-03-29T17:16:34.587

12 How close to each other can Earth-mass planets plausibly form from the protoplanetary disk? 2019-07-17T22:15:10.007

11 How can three planets be close enough to see each other 2016-08-14T07:21:39.440

11 Stable ringworld interactivity with other solar system objects 2017-05-01T18:08:46.330

11 How Many Earth-Like Worlds Could Be Made Using Only Material From The Solar System? 2018-02-03T00:54:36.673

11 What factors affect how many moons a planet can have? 2019-04-03T10:21:48.183

10 What could make a star violet? 2016-12-15T13:01:47.550

10 Would the inner planets of our Solar System line up? 2017-03-20T19:54:45.263

10 How to fit three habitable worlds in our solar system? 2017-03-21T02:22:42.507

10 What star system beyond Sol would be the first one most likely to be explored? 2017-04-10T04:33:44.933

10 The Nightfall / Kalgash System 2018-06-13T12:35:33.107

10 Tiny galaxies with exoplanets 2018-07-05T14:50:31.370

10 Could a solar system exist inside of a nebula which is made of breathable gases? 2019-10-08T11:25:23.050

9 Mass transit across the solar system 2016-08-25T15:58:54.113

9 How do I design the solar transit of a hot Jupiter? 2018-02-17T23:31:44.227

9 If the Earth was part of an ultimate solar system, what would the sky look like? 2019-01-27T12:33:58.997

9 How can an Earth-like moon meet these angular diameter conditions? 2019-11-20T20:23:10.987

9 What tech would aliens use to harvest/alter our star and why? 2020-01-26T19:40:41.100

8 Use Physics to prove Ragnarök has already occurred 2014-10-15T18:43:03.170

8 Could a planet be at the center of the universe, yet still have a sun? 2016-05-27T10:57:33.303

8 Could a solar flare create terrestrial areas of background radiation? 2018-01-30T12:52:39.043

8 Silly orbits - can an orbit be both stable and interplanetary? 2018-04-12T23:46:24.880

8 Distance between star systems 2019-01-21T13:22:04.803

7 If there was a planet where the asteroid belt is, could it have a stable orbit? 2014-11-14T10:18:30.717

7 What are mapping or diagramming techniques that would be valuable to someone mapping a planetary system? 2015-06-25T03:20:39.273

7 How could month-long travel times be compatible with a settled Solar System? 2015-11-21T01:43:46.847

7 Possibility of a civilization on (or around) Planet Nine 2016-01-22T21:43:15.700

7 What will happen after I use a light swich to turn off the Sun? 2016-09-01T17:32:40.090

7 How to fire your engines for a near-future trip around the solar system? 2016-12-03T02:44:09.697

7 Which side of a tidally locked moon experiences higher radiation? 2018-07-13T18:26:44.983

7 Is it possible to hide a base in the Kuiper Belt? 2019-01-05T18:42:38.890

7 What would be the effects on a planet orbiting a shedding red giant? 2019-05-22T11:01:09.810

7 How soon does the Earth's surface re-solidify after the red-giant Sun is replaced with a different star? 2020-01-28T09:01:48.207

6 What are the best Solar System locations for a human colony? 2015-05-25T16:26:02.560

6 A Binary Sun, A Hot Jupiter and a Binary Mars...All Within View of Earth 2015-11-08T16:42:05.730

6 What's a realistic (pessimist) timeframe for colonization of the inner Solar System? 2015-12-27T02:52:56.253

6 How to implement a Solar System sports body/federation? 2016-04-08T15:18:17.037

6 Possibility of a terrestrial moon orbiting a Jovian planet for the setting of a fantasy world 2016-06-15T08:11:53.363

6 Planet with large areas of shadow 2016-09-13T19:16:42.713

6 Where do you put a photosynthetic Dyson sphere? 2017-02-10T12:58:57.803

6 You emerge from a wormhole into a brand new star system, how long does it take to accurately map all orbital bodies? 2017-05-03T13:59:28.363

6 How to keep this artificial water planet from evaporating or freezing? 2018-03-05T18:59:39.457

6 How far out can a pre-telescope human society (naked eye observations only) detect planets? 2018-12-18T21:33:27.037

6 Planet Orbiting a Red Dwarf 2018-12-27T23:55:29.637

6 Independently Tidelocked Moon? 2019-01-20T19:37:21.193

6 Effects of a close approach with a non-pulsar neutron star? 2019-03-12T08:43:09.137

6 How far away from a Sol-class sun could a planet be and still be habitable? 2019-03-22T18:01:50.713

6 Can a planet have a different gravitational pull depending on its location in orbit around its sun? 2019-04-08T09:30:48.807

6 What are the effects of a nearby supernova on a young solar system? 2019-06-26T13:02:23.167

6 What set of circumstances are most likely to lead to a planet with a climate resembling the Great Plains? 2019-07-15T23:07:52.620

6 What star can give an earth-like planet a 1-day year? 2019-11-08T17:33:17.430

6 The Earth and Moon resolidify under a bluer star, their outer layers evaporated and burned away. What do they look like now? 2020-02-01T16:48:08.140

5 Two new planets orbiting the Sun beyond Pluto 2015-09-07T11:41:59.540

5 Is it possible for a planet oddly similar to the ones we have orbiting our sun to make a shield to protect an interstellar space ship? 2015-10-20T09:08:42.913

5 Effect of red giant phase on the Solar System 2016-01-13T08:39:12.320

5 Ramming into the sun 2016-12-21T16:50:17.230

5 Is the planet Sentia realistic? 2017-05-01T17:44:43.883

5 Formation of a planet with a mercury core 2017-05-02T13:05:50.097

5 Orbital configuration for a stellar beacon 2017-07-06T23:29:29.297