APOD: October 14, 1995 - Rhea: Saturn's Second Largest Moon
Rhea : Saturn's Moon - Behind Titan, Rhea is Saturn's second largest moon and the largest without an atmosphere. It is composed mostly of water ice, but has a small rocky core. Rhea's rotation and orbit are locked together, like Earth's Moon, so one side always faces Saturn
From Mountains to Moons: Multiple Discoveries from NASA’s New Horizons Pluto Mission - NASA
From Mountains to Moons: Multiple Discoveries from NASA’s New Horizons Pluto Mission. New close-up images of a region near Pluto’s equator reveal a giant surprise -- a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body. Credits: NASA/JHU APL/SwRI - 07/15/2015
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