2015 May 23HeleneExplanation: A Cassini image of Saturn’s moon Helene silhouetted against
2015 May 23HeleneExplanation: A Cassini image of Saturn’s moon Helene silhouetted against Saturn. Helene’s mean diameter is about 35 km - about the size of some of Pluto’s smaller moons…Image credit: NASA/JPL/SSI/color composite by Mike Malaska. Courtesy of The Planetary Society. -- source link
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