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Habitable, or habitable for humans? That's not the same thing.
The planet was a giant snowball at one point - glaciers from pole to pole, and all along the equator. It seems to have recovered from that (thanks to global warming!).
[1 point]129 days ago by enigmamzReplyEdited 129 days ago by enigmamz
Habitable, or habitable for humans? That's not the same thing.
The planet was a giant snowball at one point - glaciers from pole to pole, and all along the equator. It seems to have recovered from that (thanks to global warming!).
Dang... you beat me to it. ;o)
Sure. There are anaerobic bacteria that survive seven miles down in the rock.