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Jupiter's Volcanic Moon Io

Jupiter's Volcanic Moon Io


Depicts: Jupiter, Io
Copyright: J. Spencer (Lowell Observatory) and NASA

In this picture of Io, the mound rising from Io's surface is actually an eruption from Pillan, a volcano that had previously been dormant.

Measurements at two ultraviolet wavelengths indicate that the ejecta consist of sulfur dioxide "snow," making the plume appear green in this false-color image. Astronomers increased the color contrast and added false colors to the image to make the faint plume visible.

Last Update: 1 September 2019
28-Mar-2024 18:32 UT

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