Ganymede (Jupiter III)

Ganymede, or Jupiter III, is the largest moon in the Solar System.

It is larger than Mercury, but has only about half of its mass

The surface is very complicated with moutains, valleys, flat plains and craters.

It has light and dark regions. The darker regions have more craters and so are probably older.

The very light spots are recent craters.

Facts and Figures
Orbit	1,070,000 km from Jupiter
Radius	2,631 km
Mass	1.5 x 1023 kg or 0.025 Earths
Length of Day	7.15 Earth days
Length of Orbit	7.15 Earth days