Io
Caption:
Voyager 2 took this picture of Io on the evening of July 9, 1979, from a range of 1.2 million kilometers. On the limb of Io are two blue volcanic eruption plumes about 100 kilometers high. These two plumes were first seen by Voyager 1 in March, 1979, and are designated Plume 5 (upper) and Plume 6 (lower). They have apparently been erupting for a period of at least 4 months and probably longer. A total of six plumes have been seen by Voyager 2, all of which were first seen by Voyager 1. The largest plume viewed by Voyager 1 (Plume 1) is no longer erupting. Plume 4 was not viewed on the edge of the moon's disc by Voyager 2 and therefore it is not known whether or not it is still erupting. This picture is one of a series taken to monitor the eruptions over a 6 hour period.
Cataloging Keywords:
| Name |
Value |
Additional Values |
| Target |
Io |
|
| System |
Jupiter |
|
| Target Type |
Satellite |
|
| Mission |
Voyager |
|
| Instrument Host |
Cassini Orbiter |
Voyager 2 |
| Host Type |
Orbiter |
Flyby Spacecraft |
| Instrument |
Imaging Science Subsystem (ISS) |
|
| Detector |
|
|
| Extra Keywords |
Color, Plume, Volcano |
| Acquisition Date |
|
| Release Date |
1999-10-14 |
| Date in Caption |
1979-07-09 |
|
| Image Credit |
NASA/JPL |
| Source |
photojournal.jpl.nasa.gov/catalog/PIA01362 |
| Identifier |
PIA01362 |
