Possible Internal Structures of the Galilean Satellites

Cutaway views of the possible internal structures of the Galilean satellites. Ganymede at lower left, Callisto at lower right, Io on upper left, and Europa on upper right in a combined biew from NASA Galileo and Voyager spacecraft.

Cutaway views of the possible internal structures of the Galilean satellites. Ganymede at lower left, Callisto at lower right, Io on upper left, and Europa on upper right in a combined biew from NASA Galileo and Voyager spacecraft.

GanymedeGalileo