Magnetosphere of Ganymede

Artist's Concept of Aurorae and Ganymede

This is an artist's concept of the moon Ganymede as it orbits the giant planet Jupiter. NASA's Hubble Space Telescope observed aurorae on the moon that are controlled by Ganymede's magnetic fields. Two auroral ovals can be seen over northern and southern mid-latitudes. Hubble...

Ganymede Aurorae (STIS)

NASA's Hubble Space Telescope observed a pair of auroral belts encircling the Jovian moon Ganymede. The belts were observed in ultraviolet light by the Space Telescope Imaging Spectrograph and are colored blue in this illustration. They are overlaid on a visible-light image of...

Ganymede Auroral Band Oscillation

This chart plots the excursion of a pair of auroral belts on Jupiter's moon Ganymede. Their motion provides insight into the moon's interior. Ganymede has a magnetic field produced by an iron core. Because Ganymede is close to Jupiter, it is also embedded in Jupiter's own...

Ganymede Interior

This is an illustration of the interior of Jupiter's largest moon, Ganymede. It is based on theoretical models, in-situ observations by NASA's Galileo orbiter, and Hubble Space Telescope observations of the moon's aurorae, which allows for a probe of the moon's interior. The...

Compass and Scale Image for Ganymede