Rhea (possible True Colors credits: Lunar Explorer Italia)

Caption NASA:"The Cassini Spacecraft's narrow-angle camera captured Saturn's moon Rhea as it gradually slipped into the Planet's (i.e.: Saturn) shadow — an event known as "ingress" — on Aug. 19, 2008.

This image was acquired by NASA's Cassini Spacecraft at a Solar Phase, or Sun-Rhea-Spacecraft, angle of about 28° and at a distance from Rhea of approx. 450.000 Km (about 280.000 miles). Image scale is roughly 2,7 Km (about 1,7 miles) per pixel".