In this photo, the Cassini spacecraft looks toward Rhea's cratered, icy landscape, with the dark line of Saturn's ringplane and the planet's murky atmosphere as a background. Rhea is Saturn's second-largest moon, at 1,528 kilometers (949 miles) across. This view looks toward the unilluminated side of the rings from less than a degree above the ringplane. Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were acquired with the Cassini spacecraft narrow-angle camera on July 17, 2007 at a distance of approximately 1.2 million kilometers (770,000 miles) from Rhea. Image scale is 7 kilometers (5 miles) per pixel. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency.