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SATURN DAILY
The hard knock life of Saturn's Epimetheus
by Staff Writers
Pasadena CA (JPL) May 12, 2016


Image courtesy NASA and JPL-Caltech/Space Science Institute. For a larger version of this image please go here.

Life is hard for a little moon. Epimetheus, seen here with Saturn in the background, is lumpy and misshapen, thanks in part to its size and formation process. Epimetheus did not form with all of those craters in place - rather, bombardment over the eons has left this tiny moon's surface heavily pitted.

Epimetheus (70 miles or 113 kilometers across) is too small to have sufficient self-gravity to form itself into a round shape, and it has too little internal heat to sustain ongoing geological activity. Thus, its battered shape provides hints about its formation, and the myriad craters across its surface bear testament to the impacts it has suffered over its long history.

North on Epimetheus is up and rotated 5 degrees to the left. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 6, 2015.

The view was obtained at a distance of approximately 1,670 miles (2,690 kilometers) from Epimetheus. Image scale on Epimetheus is 520 feet (160 meters) per pixel.


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