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celtschk's user avatar
celtschk's user avatar
celtschk
  • Member for 9 years, 8 months
  • Last seen more than 1 year ago
89 votes

If time travel is possible in the future, no matter how distant, why haven't they come back to tell us?

71 votes
Accepted

What is valid evidence in a world with perfect CGI technology?

62 votes
Accepted

If we put humans on planets with atmospheres different from Earth's atmosphere, but still containing oxygen, would humans be able to breathe?

62 votes

What would the periodic table of a 4-Dimensional universe look like?

60 votes
Accepted

What would a planet spinning fast enough to allow geostationary orbit near the surface look like?

56 votes
Accepted

What if the speed of light were 100 times higher?

54 votes

How could possession magic be limited to prevent overuse?

52 votes

How to prevent tiny mistake in 'programmable language' magic spell causing horrible disasters?

47 votes
Accepted

Is a man-eating plant realistic?

40 votes

Is it possible for a species to have more than two sexes?

39 votes

Humanely reducing the human population?

37 votes

What environment would make leaves light blue?

37 votes

Would relatively primitive people really confuse technology with magic?

33 votes

How extensive could a habitable twilight zone be on a tidally locked planet?

32 votes

Why would a civilisation choose to inhabit a single enormous vessel instead of maintaining interstellar colonies?

28 votes
Accepted

Feasibility of anti-matter as a fuel

26 votes

My star will explode as a supernova. What can I do in order to ensure that my planet survives that?

24 votes
Accepted

Magical internet - unique addressing system

24 votes
Accepted

Two consanguineous human princes (same father and mother). How far apart in age could they be?

22 votes
Accepted

How to preserve the remaining trolls?

22 votes

What could cause the Earth to be so endangered that mankind needs to relocate to another system?

20 votes

Stopping time, by speeding it up inside a bubble

20 votes
Accepted

Could a person see with glowing eyes?

20 votes
Accepted

What would happen if a virus could not be cured or contained?

19 votes

How would a human livestock facility run by aliens operate?

18 votes
Accepted

How do I design a map that looks old?

18 votes

How can a spaceship unknowingly interfere with tides on a planet?

18 votes
Accepted

Motivations for interstellar colonizations

17 votes

How would having multiple moons affect tides?

17 votes
Accepted

Orbiting one star in a binary system: what are the effects of the second star on the planet?

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