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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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        "Ganymede True Color Orbit 1" This is the only true colour image of Ganymede acquired by Galileo spacecraft. (NASA/JPL image)
        source:  http://photojournal.jpl.nasa.gov/jpegMod/PIA00716_modest.jpg
        Description:  http://photojournal.jpl.nasa.gov/catalog/PIA00716 Natural color view of Ganymede from the Galileo spacecraft during its first encounter with the satellite. North is to the top of the picture and the sun illuminates the surface from the right. The dark areas are the older, more heavily cratered regions and the light areas are younger, tectonically deformed regions. The brownish-gray color is due to mixtures of rocky materials and ice. Bright spots are geologically recent impact craters and their ejecta. The finest details that can be discerned in this picture are about 13.4 kilometers across. The images which combine for this colour image were taken beginning at Universal Time 8:46:04 UT on June 26, 1996.
        The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC. This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL  http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at URL  http://www.jpl.nasa.gov/galileo/sepo
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