Aurora on Jupiterís moon Io

Aurora on Jupiterís moon Io

Fig. 9.17 . The ghostly glow of aurora are detected in the atmosphere of Io when the satellite was in Jupiterís shadow. The aurora is produced by energetic particles, which are trapped in Jupiterís magnetic field and collide with Ioís atmospheric gases, creating a red and green glow analogous to the aurora of Earth. Blue light is caused by dense volcanic plumes and may indicate regions that are electrically connected to Jupiter itself. (Courtesy of NASA/JPL/U. Arizona.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University