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164 votes

Realistic Santa and Reindeer

answered Dec 7, 2015 at 10:01

91 votes

Create "gold" from lead (or other substances)

answered Oct 9, 2016 at 21:29

60 votes

Are there any rules or guidelines about designing a flag?

answered Oct 11, 2016 at 18:57

43 votes

What happens when one planet "lands" on another?

answered Jan 29, 2016 at 0:10

39 votes

Alien number systems - Is the decimal system special?

answered Dec 7, 2016 at 22:46

27 votes

Accepted

Maximum travel speed of a teleporter that requires line of sight

answered Jan 19, 2016 at 4:40

25 votes

"Life post-Singularity", or "How to survive without Instagram"

answered Jan 7, 2016 at 19:39

24 votes

Where should I land my invading fleet?

answered Nov 22, 2015 at 18:25

24 votes

Accepted

Why would an artificial planet inhabited by machines have seasons?

answered Oct 2, 2016 at 12:04

18 votes

Accepted

Could two stars of equivalent mass/size form a binary system and be different colors?

answered Jan 3, 2016 at 5:20

17 votes

How would a universe in which death is impossible work?

answered Jan 20, 2016 at 1:05

17 votes

Accepted

Glass hitting water at terminal velocity

answered Mar 1, 2016 at 20:04

16 votes

Would a city underground in the desert make sense from a survival standpoint?

answered Jan 29, 2016 at 1:28

13 votes

Making skeletons a challenging fight

answered Nov 23, 2015 at 19:15

11 votes

Would it be possible for a planet to form so it has all of the landmass in only one hemisphere?

answered Nov 20, 2015 at 12:17

11 votes

Asynchronous society

answered Jan 17, 2016 at 20:16

11 votes

Accepted

What would it take to keep a large island in the East Pacific hidden?

answered May 24, 2017 at 16:28

11 votes

What would pants that cover all four legs of a centaur look like?

answered Feb 29, 2016 at 16:06

10 votes

How does one design a city meant for creatures of greatly varying sizes?

answered Nov 22, 2015 at 4:31

9 votes

Accepted

How can I escape from a planet like Mars without any modern technological tools such as a rocket?

answered Oct 13, 2016 at 11:47

8 votes

Astronaut magnetic "gravity" injections

answered Dec 7, 2016 at 0:17

8 votes

How to ensure crew safety in an inertial starship

answered Oct 12, 2016 at 19:53

7 votes

Climbing a ladder in zero g

answered Dec 11, 2015 at 2:53

7 votes

Equations or process to determine the result of a collision between two objects?

answered Jan 8, 2016 at 23:13

7 votes

Could (and how would) life develop and survive in a place of 24 hours of darkness?

answered Jan 10, 2016 at 8:02

6 votes

Accepted

What are the required proportions of a moon that allow it to orbit around a planet?

answered Jan 16, 2016 at 10:41

6 votes

Accepted

Saving the most lives without butterfly effects

answered Dec 8, 2015 at 8:12

6 votes

Accepted

Would increased language education result in less language changes?

answered Dec 9, 2015 at 23:58

6 votes

Accepted

If the Moon Titan Orbits Earth

answered Jan 3, 2016 at 6:30

6 votes

How many solar panels would it take to totally encapsulate our sun?

answered Jan 6, 2016 at 8:35

Stack Exchange Network

52 Answers

Realistic Santa and Reindeer

Create "gold" from lead (or other substances)

Are there any rules or guidelines about designing a flag?

What happens when one planet "lands" on another?

Alien number systems - Is the decimal system special?

Maximum travel speed of a teleporter that requires line of sight

"Life post-Singularity", or "How to survive without Instagram"

Where should I land my invading fleet?

Why would an artificial planet inhabited by machines have seasons?

Could two stars of equivalent mass/size form a binary system and be different colors?

How would a universe in which death is impossible work?

Glass hitting water at terminal velocity

Would a city underground in the desert make sense from a survival standpoint?

Making skeletons a challenging fight

Would it be possible for a planet to form so it has all of the landmass in only one hemisphere?

Asynchronous society

What would it take to keep a large island in the East Pacific hidden?

What would pants that cover all four legs of a centaur look like?

How does one design a city meant for creatures of greatly varying sizes?

How can I escape from a planet like Mars without any modern technological tools such as a rocket?

Astronaut magnetic "gravity" injections

How to ensure crew safety in an inertial starship

Climbing a ladder in zero g

Equations or process to determine the result of a collision between two objects?

Could (and how would) life develop and survive in a place of 24 hours of darkness?

What are the required proportions of a moon that allow it to orbit around a planet?

Saving the most lives without butterfly effects

Would increased language education result in less language changes?

If the Moon Titan Orbits Earth

How many solar panels would it take to totally encapsulate our sun?