Cassini gazes across the icy rings of Saturn toward the icy moon Tethys, whose night side is illuminated by Saturnshine, or sunlight reflected by the planet. via NASA ift.tt/2w11uQk
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Saturn-lit Tethys was taken on August 21, 2017 at 02:39AM
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Saturn-lit Tethys was taken on August 21, 2017 at 02:39AM
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