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Global Geologic Map of Ganymede

Ganymede is the largest satellite of Jupiter, and its icy surface has been formed through a variety of impact cratering, tectonic and possibly cryovolcanic processes. Images of Ganymede suitable for geologic mapping were collected during the flybys of Voyager 1 and Voyager 2 (1979), as well as during the Galileo mission in orbit around Jupiter (1995–2003). This map represents a synthesis of scientists’ understanding of Ganymede geology after the Galileo mission.

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Image Credit: Wheaton College/JHUAPL/Brown University/JPL/USGS

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