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Ganymede Callisto interior density


Graphic showing Ganymede and Callisto interior density structures Image Courtesy of Southwest Research Institute Interior density structures created by an outer solar system late heavy bombardment onto Ganymede (top row) and Callisto (bottom row). The left column shows the density at the surface as a function of latitude and longitude, and the right column shows a slice through the center of the globe. Colors show the density, with black representing pure rock, blue representing mixed ice and rock, and white showing pure ice.