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Q&A Impact on the sciences with helium instead of nitrogen

Suppose we have a planet whose atmosphere has roughly the same gaseous proportions as Earth, but helium replaces nitrogen, and has a strong hydrogen presence in the upper atmosphere; has a gravitat...

7 answers  ·  posted 10y ago by Frostfyre‭  ·  last activity 5y ago by Frostfyre‭

Question environment physics technology