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Q&A What is the minimum planetary mass to hold an atmosphere over geologic time scales?

I realize that many factors affect this answer so assume the following: Star type: G2 star (like our Sun) Composition: O2, N2, CO2, H2O atmosphere Magnetic field: Two different magnetic field str...

3 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 6y ago by Jim2B‭

Question atmosphere planets