Callisto: A thick skinned satellite (density = 1.8 g/cm3). - Galileo Spacecraft Callisto Image Gallery
- Callisto is heavily cratered and shows no signs of significant
ice volcanism or tectonism on its surface.
- Callisto's ice crust formed early and thickened quickly.
- Callisto formed farther from Jupiter, which was initially quite hot.
- Callisto is also slightly smaller than Ganymede
Review the Galileo spacecraft's Top 10 Science Images
Revised November 30, 2007