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For questions regarding the application of the laws of physics to orbital mechanics, stellar evolution, and other astronomical processes and celestial bodies.

15 votes

Can I warm up outer space?

In your alternate-reality, your worlds swim through an actual Luminiferous Aether In the good old days, long before humanity actually understood that space is remarkably empty, we though there was stu …
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13 votes

Alternate universe where life is more common; is it feasible?

Focusing only on how to increase the likelihood of life and not on how to overcome problems like FTL travel between star systems... As I mentioned in my comments, the basic chemistry leading to life i …
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  • 132k
8 votes

I need to know day/night cyles of a moonplanet

We can't give you hard numbers without orbital and rotation speeds, but we can give you advice about figuring out the solution. This is more valuable to the worldbuilding community at large, anyway. B …
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2 votes

Destruction of a Trojan Asteroid by an RKV

Neither The Good, the Bad, and the Ugly... The Good When someone gets shot in a Hollywood movie, they sail across the floor, or spin around, or do something that generally has no bearing on reality. W …
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19 votes

Why would space fleets be aligned?

Are you asking from the POV of TV shows and Movies? TV shows and movies always show fleets approaching one another in the same orientation and on the same plane. Why? For the convenience of the vie …
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4 votes

Any way of having a breathable atmosphere with zero gravity in free space?(and universal dir...

Let me borrow from an answer of mine to this question In your alternate-reality, your worlds swim through an actual Luminiferous Aether In the good old days, long before humanity actually understood …
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