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Ganymede: Galileo Regio
Ganymede: Galileo Regio (click to enlarge)

Ganymede: Galileo Regio

The surface of Ganymede displays a great variety of terrain types. In this Voyager 2 mosaic, the ancient dark area called Galileo Regio is positioned at the upper right. The bright ray system in the south is probably caused by water-ice thrown outward from the site by a relatively recent impact.

This image uses the same data as PIA00081, with missing data at top and bottom filled in by lower resolution Voyager 2 views obtained simultaneously with the Voyager wide-angle camera, in order to create a complete global view.

Additional information about the Voyager mission is available online at:

NOTE: This processed image is copyrighted. Contact Ted Stryk for usage inquiries.

Last Update: 25 Mar 2011 (AMB)

Credit: NASA/JPL/Ted Stryk

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Last Updated: 25 Mar 2011