A moody moon turns its face

Bad Astronomy
By Phil Plait
Jun 20, 2011 10:00 PMNov 19, 2019 8:54 PM

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Just two days ago, the Cassini spacecraft flew by Saturn's tiny moon Helene at a distance of only 7000 km (4300 miles). As it swept past, Cassini's first view was of the dark, unilluminated portion of the moon, getting this lovely, moody shot:

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