Ganymede is the 3rd and largest moon of the Jupiter System and the largest moon in the Solar System.
It takes 7.2 days to complete an orbit.
This colour enhanced image reveals Ganymede's frosty polar caps
and its two predominant terrains: bright, grooved terrain and older, dark furrowed areas.
Some large impact craters are also visible
Source: Planetary Photojournal - PIA01666