This view of Dione, Saturn's icy moon, highlights its tectonic faults and craters. To create this enhanced-color view, ultraviolet, green and infrared images were combined into a single black and white picture that isolates and maps regional color differences. This "color map" was then superposed over a clear-filter image.
This view of Dione, Saturn’s icy moon, highlights its tectonic faults and craters.
To create this enhanced-color view, ultraviolet, green and infrared images were combined into a single black and white picture that isolates and maps regional color differences. This “color map” was then superposed over a clear-filter image. The origin of the color differences is not yet understood, but may be caused by subtle differences in the surface composition or the sizes of grains making up the icy soil.
This image was acquired by the Cassini spacecraft narrow-angle camera on Dec. 24, 2005.Image Credit: NASA