PROFILEMoon of Jupiter
A layered world
Its surface combines ancient dark regions with lighter, grooved terrain. Scientists are also investigating the possibility of an ocean beneath its crust.
A magnetic field of its own
Ganymede is the only moon known to have its own magnetic field. Galileo and Juno have studied it; ESA’s Juice mission is exploring the Jupiter system.
FACTS TO EXPLORE
ORBITAL PERIODabout 7.2 days
LOCATIONMoon of Jupiter
Values are rounded. AU means astronomical unit. NASA source ↗
