Ganymede Lumps
Scientists have discovered irregular lumps beneath the icy surface of Jupiters largest moon, Ganymede. These irregular masses may be rock formations, supported by Ganymedes icy shell for billions of years.
This mosaic of Jupiters moon Ganymede consists of more than 100 images acquired with NASAs Voyager and Galileo spacecrafts. The gravity anomalies or lumps inferred from the Galileo radio Doppler data are shown in red. The mosaic shows the surface of Ganymede with its geographic coordinate system and the Galileo gravity results superimposed.
The trajectory path of Galileos second Ganymede flyby on September 6, 1996, is shown in green. There are no obvious geologic features associated with the anomalies.
