GALILEO PROBE

The satellite Ganymede is the largest of the four Galilean satellites: it is the size of Mars or Mercury. If the surface is more rocky than that of Europa, it also contains a lot of water.

At the top, the crater Osiris shows that ice was ejected from the depths of Ganymede. The finer details are on the order of 7 km.

At the bottom, a reconstruction of the relief of the surface of Ganymede images taken from a distance of 10000 km.