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Rigorous Science Smallest possible habitable planet? (also taking density into account)

I have seen a few similar questions but none seem to take the density of a planet into account. I'm creating a planet on which several small civilisations develop. The planet needs to have a few bi...

8 answers  ·  posted 8y ago by System‭  ·  last activity 6y ago by System‭

Question planets gravity life