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2:30 pm Photographer : JPL Range : 2.6 million km. ( 1.6 million m...
2:30 pm Photographer : JPL Range : 2.6 million km. ( 1.6 million miles ) Ganymede is Jupiter's largest satellite ( or moon ) With a radius of about 2600 km., about 1.5 times that of our moon, Ganymede has a... More