PIA00354: Ganymede at 87,000 miles

Target Name: Ganymede Is a satellite of: Jupiter Mission: Voyager Spacecraft: Voyager 1 Instrument: Imaging Science Subsystem - Narrow Angle Product Size: 460 samples x 780 lines Produced By: JPL Producer ID: P21279 Addition Date: 1996-07-17 Primary Data Set: Voyager EDRs Full-Res TIFF: PIA00354.tif (218.7 kB) Full-Res JPEG: PIA00354.jpg (115.5 kB)

Original Caption Released with Image: This picture of Ganymede, Jupiter's largest satellite was taken on the afternoon of March 5, 1979 from a range 145,000 km (87,000 mi). The width of the picture represents about 580 km (548 mi.) on the surface of Ganymede, and the smallest visible features are about 3 km (1.7 mi) across. The picture shows complex patterns of ridges and grooves which are probably the results of deformations of Ganymede's thick icy crust. Some systems of grooves and ridges are superposed on the ridge and groove systems indicating they are younger. A more degraded crater near the left center of the picture is crossed by ridges indicated that it predates the period of crystal deformation. JPL manages and controls the Voyager Project of NASA's Office of Space Science. Image Credit: NASA/JPL