CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Bright Lines, Dark Canvas

The bright fractures on Dione's trailing side slice across terrain that is darker than the rest of the surface. Cassini scientists are working to understand the nature of the dark material that appears to coat the surfaces of several of Saturn's moons.

Lit terrain seen here is on the Saturn-facing side of Dione (1,123 kilometers, 698 miles across). North is up.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 17, 2008. The view was acquired at a distance of approximately 873,000 kilometers (543,000 miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 47 degrees. Image scale is 5 kilometers (3 miles) per pixel.

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: June 23, 2008 (PIA 10409)
Image/Caption Information
  Bright Lines, Dark Canvas
PIA 10409

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