Io

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Caption:

This Voyager 2 picture of Io was taken in ultraviolet light on the evening of July 4, 1979, at a range of 4.7 million kilometers (2.9 million miles). The bright spot on the right limb is one of the volcanic eruption plumes first photographed by Voyager 1. The plume is more than 200 kilometers (124 miles) high. The volcano apparently has been erupting since it was observed by Voyager 1 in March. This suggests that the volcanos on Io probably are in continuous eruption.

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	Grayscale, Plume, Ultraviolet, Volcano
Acquisition Date
Release Date	1999-07-23
Date in Caption	1979-07-04
Image Credit	NASA/JPL
Source	photojournal.jpl.nasa.gov/catalog/PIA01989
Identifier	PIA01989