Ganymede - Voyager 1

Jupiter's moon Ganymede from 3.4 million kilometers

Ganymede
Voyager 1 view of Ganymede, Jupiter's largest moon, from a distance of about 3.4 million kilometers (2.1 million miles). This color image is composed of images taken through three different filters. Note the intricate light and dark markings on the suface, which hint at a complex history. (Voyager 1, P-21186) 

Ganymede;
Galilean Satellites
Voyager Missions