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Saturn's "wispy" moon Dione lies in front of the cratered surface of the moon Tethys, as seen by Cassini.
Dione is closest to the spacecraft here. At the top of the image, the bright "wispy" fractures are visible on Dione (1123 kilometers, 698 miles across). See PIA10560 and PIA06163 to learn more. Beyond wispy Dione, the large crater Penelope can be seen near the equator of Tethys (1062 kilometers, 660 miles across). See PIA08149 for a closer view of Penelope.
Lit terrain seen here is on the trailing hemispheres of the two moons. The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on Dec. 6, 2010.
The view was obtained at a distance of approximately 2.1 million kilometers (1.3 million miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 75 degrees. The view was obtained at a distance of approximately 2.2 million kilometers (1.4 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 75 degrees. Scale in the original image was 12 kilometers (8 miles) per pixel on Dione and 13 kilometers (8 miles) per pixel on Tethys. The image was contrast enhanced and magnified by a factor of two to enhance the visibility of surface features.
The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. 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.