Lex Fridman Podcast
#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life
Adam Frank
And that is a kind of planet that it would be a, you know, kind of in the super earth sub Neptune domain we were talking about, you know, maybe eight times that mass of the earth. But it's got a layer of hydrogen, an atmosphere of hydrogen. Hydrogen is an amazing greenhouse gas. So hydrogen will keep the planet underneath it warm enough that you could get liquid water.
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