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:
About the Image
NASA press release
NASA caption
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 • Solar System Images/Videos |
Colours & filters
| Band | Wavelength | Telescope |
| Ultraviolet Far-UV |
260 nm | Hubble Space Telescope |
| Ultraviolet Mid-UV |
340 nm | Hubble Space Telescope |
| Ultraviolet Near-UV |
410 nm | Hubble Space Telescope |
