18: Coming to Terms with your Nerdiness
Dear Hank & John
00:00
Europa - The Moon of Jupiter
Even if there's no life involved, it's very exciting to observe a different hydrology and geology. You know, we have the earth, and we can study the earth, but mars is very different. Europa is made of ice, probably entirely. And below the surface, because of ital pressures from jupiter, it is liquid ice, so water.
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