Friday, December 4, 2015

Enceladus in Winter

A gorgeous photo of a special moon over Saturn's rings.

Water World: Saturn's moon Enceladus and the rings. Although both Enceladus and the ring particles are made up largely of water ice, they are very different. The small ring particles are too tiny to retain internal heat and have no way to get warm, so they are frozen and geologically dead. Enceladus, on the other hand, is subject to forces that heat its interior to this very day. This results in its famous south polar water jets--which are just visible here above the moon’s dark, southern limb--along with a sub-surface ocean. Details:

Looks a little like our world right now.

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