Did you know #Saturn has a doughnut-shaped current formed by ions trapped in its magnetic field? https://t.co/65UBSODygC #NationalDonutDay http://pic.twitter.com/w9I4s876cD
— CassiniSaturn (@CassiniSaturn) June 2, 2017
via Twitter https://twitter.com/CassiniSaturn
June 03, 2017 at 12:01AM
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