'''Callisto''', the outermost of the Galilean moons, does not participate in the Laplace resonance with the other three and also lies beyond the Van Allen-like radiation belt that surrounds Jupiter. Like Ganymede, Callisto is very heavily cratered. | '''Callisto''', the outermost of the Galilean moons, does not participate in the Laplace resonance with the other three and also lies beyond the Van Allen-like radiation belt that surrounds Jupiter. Like Ganymede, Callisto is very heavily cratered. |