A fascinating bit of work by Gordan Ugarkovic, this is a brief false-color animation of 950-mile-wide Rhea, second-largest moon of Saturn.
Rhea is very reflective, indicating that it is made up of a lot of water ice, and is also heavily cratered (clearly evident here.) Water ice behaves like rock at the low temperatures that exist on Rhea (from 280 to 360 degrees F below zero).
Clicking the image will open the animation, showing a short rotation sequence of the moon. Very cool!
Image: NASA/JPL/SSI/Gordan Ugarkovic