Saturn's very tiny moon

Saturn's tiny moon Daphnis makes waves as it orbits the Ringed Planet. Even though it's only 7 km (4.3 miles) across, the moon's gravity draws material along the edges of the Keeler gap, creating the serrated knife edge you see. Cassini took this photo on Ocrober 27, 2006 when it was approximately 325,000 kilometers (202,000 miles) from Daphnis.