... APOD: 2015 July 8 In the Company of Dione . ... Credit Copyright: NASA / JPL-Caltech / Space Science Institute Explanation: That is not our Moon. It's Dione , and its a moon of Saturn. The robotic Cassini spacecraft took the featured image during a flyby of Saturn's cratered Moon last month. ... First, the large orb looming behind Dione is Saturn itself, faintly lit by sunlight first reflected from the rings. ... July 2015 . ... Publications with keywords: Saturn - Saturn rings - Dione . ...