Taken by the Cassini spacecraft in April 2011, the Saturnian moon Rhea sits on the night side of Saturn with Enceladus to the right & Dione to the left.
by Cassini Imaging Team, SSI, JPL, ESA, & NASA; found on Astronomy Picture Of the Day
via @astVintageSpace
Tags: cassini, Dione, enceladus, nasa, rhea, Saturn