This mosaic of Jupiter’s moon Ganymede consists of more than 100 images acquired with NASA’s Voyager and Galileo spacecrafts, showing irregular lumps beneath the icy surface.
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Lumps Within Ganymede

Scientists have discovered irregular lumps beneath the icy surface of Jupiter’s largest moon, Ganymede. These irregular masses may be rock formations, supported by Ganymede’s icy shell for billions of years.

This mosaic of Jupiter’s moon Ganymede consists of more than 100 images acquired with NASA’s 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 Galileo’s second Ganymede flyby on September 6, 1996, is shown in green. There are no obvious geologic features associated with the anomalies. For images and information about the Galileo mission, visit JPL's Galileo Solar System Exploration.

Image details

ID#:
PIA05077

Date added:
2004-08-13

Target:
Ganymede

Mission:
Galileo

Spacecraft:
Galileo Orbiter

Instruments:
Solid-State Imaging

Rating:



Views:
4,080

Full-Res TIFF:
PIA05077.tif (0.7 MB)

Full-Res JPG:
PIA05077.jpg (0.06 MB)

Image credit:
NASA/JPL