Jupiter’s Moons
Fire World
Fiery Io is the most volcanically active body in the solar system – about a dozen volcanoes on Io are active at any one time. In this false-color map, deposits of sulfur dioxide frost appear in white and gray, while yellows and browns are probably due to other sulfurous materials. Bright red and black spots mark areas of recent volcanic activity and are usually associated with high temperatures and surface changes
Credit: NASA/JPL
   
 
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