Epimetheus

NASA / JPL / SSI / Ian Regan

Epimetheus

Cassini captured this low-phase view of Epimetheus on December 3, 2007. At 144 x 108 x 98 kilometers in size, Epimetheus is the 12th largest moon of Saturn, co-orbital with the larger Janus, outside the rings but inside the orbit of Saturn's bigger icy moons. It appears to be coated in dust, but some crater rims are relatively sharp. Near the top of this image appear some grooves reminiscent of those on Phobos.

Epimetheus

Cassini captured this view on March 30, 2005, from a distance of only 74,600 kilometers. The view is actually a false-color composite of ultraviolet, green, and infrared images. Color variations in the image are most likely a result of "photometric effects," changes in the reflectivity of the surface of Epimetheus with the angle of the incoming sunlight. The large circular crater in the lower center is Hilairea, which has a diameter of about 33 kilometers (21 miles). To the lower left is the crater Pollux, with a reddish interior. Source

NASA / JPL / SSI

Pandora

Saturn's moon Pandora as seen by Cassini on its September 5, 2005 flyby. Resolution in the full-size image is approximately 300 meters per pixel. Source

Russian Academy of Sciences / Ted Stryk

Phobos

This view of Mars' moon Phobos (which is about 25 kilometers in diameter) was captured by the Phobos 2 mission on February 28, 1989. Phobos 2 took a total of 13 color sets of images of Phobos before contact was lost on March 27, 1989.

NASA / JPL / SSI / Calvin Hamilton / Gordan Ugarkovic / Exploitcorporations

Views of Epimetheus from Cassini and Voyager

Lumpy Epimetheus looks different with each spacecraft flyby. Four of the five images are from Cassini; the center image is from Voyager 1 (the black stripe across the moon is the shadow of the F ring). In the bottom row, colored dots show features that correlate between adjacent images.