Saturnian Double Feature
Saturn's moons Titan (background) and Rhea line up in this view from the Cassini spacecraft. Although they look close together, the two satellites were actually more than one million miles apart when the picture was shot. Cassini will fly about 3,500 miles from Rhea on the night of August 29, and about 2,000 miles from Titan just 30 hours later. Rhea, Saturn's second-largest moon, is a ball of ice and rock. Much larger Titan has a thick, cold atmosphere. Sunlight scattering through the atmosphere creates the bright ring effect in this image.[NASA/JPL/SSI] For more information, see our August 28 program.
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