Template:POTD protected/2007-09-28

Hyperion, a moon of Saturn, is one of the largest highly irregular (non-spherical) bodies in the solar system. Enhanced image processing was used to bring out details and color differences in this photo taken by the Cassini orbiter. Hyperion is entirely saturated with deep, sharp-edged craters that give it the appearance of a giant sponge. Dark material fills the bottom of each crater.

Photo credit: Cassini orbiter