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Q&A Underground Atmosphere

I have a terrestrial planet that is similar to Mars in many ways, a desert-like surface, thin atmosphere, and inhospitable to large flora and fauna as we know it. This planet has ceased tectonic ...

4 answers  ·  posted 6y ago by Thalassan‭  ·  last activity 6y ago by Thalassan‭

Question atmosphere planets geology underground