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7 votes
3 answers
1k views

Can Mars disintegrate entirely in this scenario?

4 votes
2 answers
175 views

How long can this planet hold its atmosphere?

8 votes
1 answer
224 views

What should an inactive planet's topology be for nutrient circulation?

6 votes
1 answer
129 views

How would the laws of physics need to be adjusted if there really were a preferred frame of reference for FTL?

6 votes
2 answers
176 views

Using coilguns or VASIMR as thrusters in a game

1 vote
1 answer
112 views

Can kinetic energy be converted into cooling?

4 votes
8 answers
1k views

How do I create a "magic particle" to make magic work with physics?

5 votes
8 answers
547 views

Can active-support ringworlds be built?

6 votes
2 answers
228 views

Can you survive a reduction of particle mass?

7 votes
3 answers
172 views

Ballistic properties of unobtainium

4 votes
2 answers
104 views

For a planet with a given equilibrium temperature, what is the maximum pressure possible?

38 votes
10 answers
7k views

Can a planet stay cracked?

-1 votes
4 answers
145 views

How could I calculate the necessary power to kill a fictional beast?

117 votes
18 answers
24k views

What would make scientists realize they were on a flat world?

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