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Chief Science Officer Steve Carlson sends this composite picture from the Jet Propulsion Laboratory showing Jupiter and 4 of its moons.
Posted by iowahawk at 08:18 AM in Ball of the Day | Permalink
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Moons, from top to bottom: Io, Europa, Callisto, Ganymede
For scale, Ganymede (the largest Jovian moon) is a little smaller than the Earth, or about twice the size of our own Moon.
December 30, 2008 at 12:57 PM
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