The gap between Saturn and its rings is no longer unexplored space – and we're going back 21 times. #GrandFinale! https://t.co/TSA7uQe4KS http://pic.twitter.com/t9RlhEsWCP
— CassiniSaturn (@CassiniSaturn) April 27, 2017
via Twitter https://twitter.com/CassiniSaturn
April 27, 2017 at 12:54PM
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