PIA01514: Io Surface Deposits and Volcanic Craters

Target Name: Io Is a satellite of: Jupiter Mission: Voyager Spacecraft: Voyager 1 Instrument: Imaging Science Subsystem - Narrow Angle Product Size: 783 samples x 930 lines Produced By: JPL Producer ID: P21226 Addition Date: 1999-03-13 Primary Data Set: Voyager EDRs Full-Res TIFF: PIA01514.tif (2.1 MB) Full-Res JPEG: PIA01514.jpg (70.93 kB)

Original Caption Released with Image: This picture of Io, the innermost Galilean satellite, was taken by Voyager 1 on the morning of March 5, 1979 at a range of 377,000 kilometers (226,200 miles). The smallest features visible are about 10 kilometers (6 miles) across. The reddish, white and black areas are probably surface deposits, possibly consisting of mixtures of salts, sulfur and sublimate deposits of possible volcanic origin. Many of the black spots in these pictures are associated with craters of possible volcanic origin. The lack of impact craters on Io suggests that the surface is relatively young compared to the other Galilean satellites and some of the terrestrial planets such as Mercury and the Moon. JPL manages and controls the Voyager Project for NASA's Office of Space Science. Image Credit: NASA/JPL