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Q&A How to increase air density on a planet?

The question is about what changes would have to be made to an Earth-like planet, in order to increase the density of air and hence make lifting gases more effective. If that is scientifically poss...

3 answers  ·  posted 9y ago by dot_Sp0T‭  ·  last activity 9y ago by dot_Sp0T‭

Question climate atmosphere