Image from Steve Bowers | |
Ganymede with its three angled orbital rings is a hub for interplanetary and interstellar traffic |
Ganymede | |
Type | EuEuropan |
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Primary, Position | Jupiter vii |
Distance from Primary | 1,070,000 km |
Satellites | None |
Diameter and Gravity | 5,268 km / 0.145 G |
Length of day and year | 7.155 days / 7.155 days (tidally locked) |
Atmosphere | Minimal |
Surface composition | Water Ice |
Planetology | The largest of the Galileean Moons, Ganymede is a world larger than the planet Mercury. The icy surface was originally divided into dark regions mingled with younger brighter areas scoured by grooves and furrows with kilometer-high sides. Much of this has since been urbanised. |