Moon
Ganymede
Galilean moon of Jupiter
The largest moon in the solar system
Larger than the planet Mercury, Ganymede is the only moon known to generate its own magnetic field. It likely hides a saltwater ocean between layers of ice.
Key facts
Distance
1,070,400 km from Jupiter
Diameter
5,268 km
Orbital period
7.15 days
Discovered
1610, Galileo
Orbits
Jupiter
Did you know
- It has auroras driven by its own magnetic field.
- ESA's JUICE mission will orbit it in the 2030s.
- It is visible in binoculars beside Jupiter.
