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| Above: The dwarf planet Ceres, which is suspected of having once held an underground ocean. Um. It doesn't really turn back and forth in that way |
So what's it like?
Dark - the ocean's covered in 20Km of ice - but maybe not totally black: There's volcanic activity on the ocean floor, like the white smoker vents of earth, so there'd be the dim glow of volcanism. More importantly the salty, alkaline, water contains organic chemicals and hydrogen - food for possible micro-life.
Cassini's mission is nearly over - but it's now hard to imagine us not returning to Enceladus....
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| Above: Enceladus. |
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