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| Description: The Galilean Satellites The four Galilean satellites are shown here to the same scale. Io and Europa have diameters and densities comparable to our Moon and are composed primarily of rocky material. Ganymede and Callisto are roughly as big as Mercury, but their low average densities indicate that each contains a thick layer of water and ice. The cross-sectional diagrams of the interiors of the four Galilean moons show the probable internal structures of the moons, based on their average densities and on information from the Galileo mission Picture Stats: Views: 524 Filesize: 271.38kB Height: 900 Width: 1103 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=16340 |