Volcanic activity on Io

Volcanic activity on Io

. Voyager 1 captured this view of numerous volcanoes on Io on 13 July 1979. In contrast to Jupiter's satellite Callisto (Fig. 2.23), there are no impact craters on the surface of Io. Its volcanoes are continually resurfacing the satellite, keeping it young and erasing all signs of any impact craters. (Courtesy of JPL and NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University