Ganymede - New Horizons
Source: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
Published: April 2, 2007
Historical Date: February 27, 2007
This is New Horizons' best image of Ganymede, Jupiter's largest moon, taken with the spacecraft's Long Range Reconnaissance Imager (LORRI) camera at 10:01 Universal Time on Feb. 27, 2007, from a range of 2.2 million miles (3.5 million kilometers).
Dark patches of ancient terrain are broken up by swaths of brighter, younger material, and the entire icy surface is peppered by more recent impact craters that have splashed fresh, bright ice across the surface.
With a diameter of 3.273 miles (5,268 kilometers), Ganymede is the largest satellite in the solar system.