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Astronomy Picture of the Day
November 3, 1995
Jupiter's Moon Amalthea
Credit: NASA, Voyager 1, Copyright Calvin J. Hamilton

Explanation: Amalthea is Jupiter's fifth largest moon, much smaller than the four Galilean satellites Io, Europa, Ganymede, and Callisto. The orbit of Amalthea is inside of these moons, and with its long axis always pointing toward Jupiter. It's dark surface color is probably due to sulfur being expelled from Io. Amalthea is not massive enough for its internal gravity to make it spherical. Amalthea was discovered in 1892 by Edward Barnard.


Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Technical Rep.: Jay Norris. Specific rights apply.
A service of: LHEA at NASA/ GSFC
& Michigan Tech. U.

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current02:05, July 1, 2014Thumbnail for version as of 02:05, July 1, 20141,000 × 860 (352 KB)Jcpag2010 (wall | contribs)
06:26, February 3, 2014Thumbnail for version as of 06:26, February 3, 2014372 × 320 (32 KB)Jcpag2010 (wall | contribs)
09:50, October 17, 2013Thumbnail for version as of 09:50, October 17, 2013267 × 200 (4 KB)Jcpag2010 (wall | contribs)Source: Google


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