The solar system’s largest sun dial? Saturn's shadow on the rings shortens as its season reaches northern summer. https://t.co/IhOz9Mcj5V http://pic.twitter.com/KggKpubYe9
— CassiniSaturn (@CassiniSaturn) May 15, 2017
via Twitter https://twitter.com/CassiniSaturn
May 15, 2017 at 08:02PM
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