2015 May 23HeleneExplanation: A Cassini image of Saturn’s moon Helene silhouetted against
2015 May 23
Helene
Explanation: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.