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Wispy streaks curl over the horizon on Dione (1,123 kilometers, 698 miles across), caught here in a distant view from Cassini. The streaks were first revealed by Voyager, and subsequently were shown by Cassini to be an immense system of linear fractures in the moon's surface.
The image was taken with the narrow angle camera using a filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The image was acquired on February 18, 2005, from a distance of approximately 1.3 million kilometers (808,000 miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 118 degrees. The image scale is 8 kilometers (5 miles) per pixel.
[Caption updated on October 4, 2005.]
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.