Currently, sci.esa.int is under review and not being updated. For the latest information and news from ESA science missions and scientific results, please visit esa.int. For a comprehensive overview of ESA’s Science Programme and its missions, please refer to science.esa.int. For in-depth technical information aimed at ESA's scientific communities, you may also wish to consult cosmos.esa.int.

Asset Publisher

Back 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
5-Mar-2026 08:08 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/s/Alqy3vw

Latest Selection

Also Available As

Related Images

Related Videos

Caption & Press Release

Related Publications

Related Links

See Also

Documentation