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By the Pale Saturn-light
Posted on Monday, October 21, 2013
Uploaded by
Waspie_Dwarf

Image credit: NASA/JPL-Caltech/Space Science Institute
Uploader comment: Enceladus's unusual plume is only easily visible when the Cassini spacecraft and the Sun are on opposite sides of Enceladus. So what's lighting up the moon then? It's light reflected off Saturn.
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