Ganymede: Facts - Science@NASA
2021年11月5日 · Ganymede is the only moon known to have its own magnetic field – a discovery made by NASA’s Galileo spacecraft in 1996. The magnetic field causes auroras, which are ribbons of glowing, hot, electrified gas, in regions circling the north and south poles of the moon.
Ganymede (moon) - Wikipedia
Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter, and in the Solar System. Despite being the only moon in the Solar System with a substantial magnetic field, it is the largest Solar System object without a substantial atmosphere.
Ganymede - NASA Science
Ganymede is the only moon known to have its own magnetic field – something typically found on planets like Earth. The magnetic field causes auroras, or bright ribbons of glowing gas, that circle the moon’s poles.
Ganymede: Exploration - Science@NASA
Since Ganymede is close to Jupiter, its magnetic field lies within, or is embedded in, Jupiter’s magnetic field - a field within a field. (Ganymede is the primary scientific target of ESA’s JUICE mission which will also study Jupiter’s moons Europa, and Callisto.)
Ganymede: A guide to the largest moon in the solar system - Space.com
2023年5月6日 · Ganymede is larger than Europa, the largest of all moons we have in the solar system. And it is the only moon that produces its own magnetic field in the interior.
Updated Spherical Harmonic Magnetic Field Moments of Ganymede …
2022年12月12日 · As the only known moon with a strong internal magnetic field, Ganymede is a uniquely interesting object in the context of understanding the formation and structure of planetary magnetospheres. Using a spherical harmonic model centered on the moon, we report a dipole approximation for Ganymede of nT, nT, and nT.
Ganymede Is Like a 'Snowglobe' Inside, Which Could Explain Its ...
Jupiter's largest moon, Ganymede, features a surprisingly strong magnetic field for its size. Tidal effects from Jupiter continually stretch and squeeze the moon , keeping its core warm and driving the magnetic field.
Here we argue that these results imply that Ganymede has an outer silicate core surrounding a liquid (or partially liquid) inner core of iron or iron sulphide, and that the magnetic field is...
Updated Spherical Harmonic Magnetic Field Moments of Ganymede …
2022年12月12日 · As the only known moon with a strong internal magnetic field, Ganymede is a uniquely interesting object in the context of understanding the formation and structure of planetary magnetospheres. Using a spherical harmonic model centered on the moon, we report a dipole approximation for Ganymede of nT, nT, and nT.
Ganymede-centred magnetic dipole tilted by ~ 10° relative to the spin axis, and an equatorial surface-field strength of ~750 nT. The magnetic field is strong enough to carve out a...