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Published on Oct 16, 2009
Callanish is the second largest impact crater on Europa, large icy moon of Jupiter. This video uses a new digital mosaic across the center of the basin, together with a new stereo+photoclinometry based topographic map of the crater. In this version, the colors reflect topography: blues low, reds high. The total relief across the scene is less than 500 meters. Individual ridges can rise 200-300 meters. The unusual morphology, of multiple concentric rings, is due to the thinness of the ice shell, which floats on a water ocean and is likely 10 to 20 kilometers thick.