Closest View of Saturns Moon Helene

The Cassini spacecraft snapped this image during the spacecraft's closest flyby of Saturn's moon Helene, on March 3, 2010.



See Helene of Troy for the previous closest view of Helene (33 kilometers, or 21 miles across). The small moon leads the much larger Dione by 60 degrees in the moons' shared orbit. Helene is a "Trojan" moon of Dione, named for the Trojan asteroids that orbit 60 degrees ahead of and behind Jupiter as the giant planet circles the Sun.

Lit terrain seen here is on the a [...]

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