Ganymede

Ganymede is Jupiter's largest natural satellite.[1] Its magnetism makes Ganymede exceptional among known moons.[1] JPL lists its mean radius as 2,631.2 kilometres.[2]

History

Galileo Galilei discovered Ganymede on January 7, 1610.[4]

Findings

Juno detected salts and organic compounds across Ganymede's surface.[4] USGS includes crater chains, craters, and grooves in its mapped Ganymede categories.[3]

Sources

  1. Ganymede | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.
  2. Planetary Satellite Physical Parameters | NASA Jet Propulsion Laboratory. Licence: facts-only (Track B), no text reused. Attribution: NASA/JPL-Caltech.
  3. Gazetteer of Planetary Nomenclature: Ganymede | USGS. Licence: US federal work, public domain (17 USC 105). Attribution: U.S. Geological Survey.
  4. Ganymede: Facts | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.

Evidence as of 2026-11-01.