Ioís volcanoes glow in the dark

Ioís volcanoes glow in the dark

Fig. 9.12 . This view of Io was taken when the moon was in Jupiterís shadow. The image is color coded so blue to yellow to red represents increasing brightness. The bright spots indicate the locations of volcanic vents on Io, which are spewing hot lava. The brightest spot (right) is from the volcanic caldera Pillan Patera with a temperature that exceeds 1,700 kelvin, at least 200 kelvin hotter than the temperatures of the hottest volcanic eruptions on Earth today. The volcano Pele is just below and to the left of Pillan, Acaia is at the far left, and Svarog is near the bottom. This image was taken from the Galileo spacecraft in 1998. (Courtesy of NASA/JPL/U. Arizona.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University