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Explanation: Jupiter, the solar system's largest planet, is seen here next to Io, its closest Galilean moon. On the cloud tops of Jupiter near the left edge of the picture can be seen a dark circular spot which is caused by the shadow of Jupiter's largest moon Ganymede. Jupiter's cloud tops show light bands and dark belts. The clouds are primarily composed of hydrogen and helium, but their intense colors are probably caused by very small amounts of heavier elements such as sulfur or organic (carbon-containing) compounds.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Jupiter - Io - Ganymede
Publications with words: Jupiter - Io - Ganymede
See also: