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Like a cosmic bull's-eye, Enceladus and Tethys line up almost perfectly for the cameras. https://t.co/ERDwAKJaxy http://pic.twitter.com/5Lz54Dsh2q

— CassiniSaturn (@CassiniSaturn) December 14, 2015

via Twitter https://twitter.com/CassiniSaturn

December 14, 2015 at 11:41PM