Jupiter's Volcanic Moon Io

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 colour contrast and added false colours to the image to make the faint plume visible.

Credit:

J. Spencer (Lowell Observatory) and NASA/ESA

About the Image

NASA press release
NASA caption
Id:opo9913e
Type:Observation
Release date:20 April 1999, 06:00
Size:293 x 287 px

About the Object

Name:Io, Jupiter
Type:• Solar System : Planet : Type : Gas Giant
• Solar System : Planet : Satellite
• X - Solar System Images/Videos

Colours & filters

BandWavelengthTelescope
Ultraviolet
Far-UV
260 nm Hubble Space Telescope
Ultraviolet
Mid-UV
340 nm Hubble Space Telescope
Ultraviolet
Near-UV
410 nm Hubble Space Telescope

Image Formats

Large JPEG
11.4 KB
Screensize JPEG
36.1 KB

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