Explanation:
Ice geysers erupt on Enceladus, bright and shiny inner moon of Saturn. Shown in
this false-color image, a backlit view of the moon's southern limb, the
majestic, icy plumes were discovered by instruments on the Cassini Spacecraft
during close encounters with Enceladus in November of 2005. Eight source
locations for these geysers have now been identified along substantial surface
fractures in the moon's south polar region. Researchers suspect the geysers
arise from near-surface pockets of liquid water with temperatures near 273
kelvins (0 degrees C). That's hot when compared to the distant moon's surface
temperature of 73 kelvins (-200 degrees C). The cryovolcanism is a dramatic
sign that tiny, 500km-diameter Enceladus is surprisingly active. Enceladus ice
geysers also likely produce Saturn's faint but extended E ring.
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