Voyager 2 photograph of Ganymede,the largest of Jupiter's moons. The large,dark,almost circular feature is about 3200 km in diameter; it is criss- crossed by narrow,closely-spaced,light bands. The bright spots on Ganymede's surface are relatively recent impact craters. The light,branching bands are ridged & grooved terrain & are younger than the more heavily cratered dark regions. Ganymede is about one & a half times the size of our own Moon,but only about half as dense. It is composed of about 50% water or ice and 50% rock. The picture was taken on July 7,1979,from a range of 1.2 million km | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NASA |
Taille de l’image : | 4366 px × 4291 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |