#SaturnSaturday Ringside: how much do you know about Saturn's most famous feature? https://t.co/66q49Avpav http://pic.twitter.com/hna1hk3k3s
— CassiniSaturn (@CassiniSaturn) January 29, 2017
via Twitter https://twitter.com/CassiniSaturn
January 29, 2017 at 06:25AM
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