Jupiter and Ganymede
In this crisp Hubble image, Ganymede is shown just before it ducks behind the giant planet. Image credit: NASA/ESA
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The JPL-developed and -built Wide Field and Planetary 2 camera on NASA's Hubble Space Telescope captured a view of Jupiter with its moon Ganymede.

For more information, go to the Hubble release at http://hubblesite.org/newscenter/archive/releases/2008/42 .