An extreme closeup of Enceladus, a moon of Saturn, taken by Cassini on October 9.
Like Jupiter's volcanic Io and Neptune's Triton, Enceladus is notable for its geological activity and the organic compounds spewing from vents at its southern pole, which in some pictures give the moon the appearance of a comet. On Oct. 9, Cassini flew into the vented plume to directly sample its composition.
A narrated video tour of the moon is here.
Wayne
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