CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Rubble Moon?

Rubble Moon?
PIA 06640

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  Small and asteroid-like in appearance, Epimetheus (113 kilometers, 70 miles across) is seen here with Saturn's nearly edge-on rings in the distance. Epimetheus has a mean density that is less than that of water, suggesting that it might be somewhat porous.

The image was taken in visible light with the narrow angle camera on March 12, 2005 from a distance of approximately 1.8 million kilometers (1.1 million miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 90 degrees. Resolution in the original image was 10 kilometers (6 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of two to aid visibility.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission, visit and the Cassini imaging team home page,

Credit: NASA/JPL/Space Science Institute
Released: May 3, 2005 (PIA 06640)
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