The solar system's largest moon may be heating up — offering clues to its mysterious origins
Jupiter's largest moon, Ganymede, may be experiencing a heating process that could explain its unique magnetic field. New research suggests that this heating could be ongoing and is contrary to traditional theories about the formation of its metallic core. The findings could provide insights into the moon's mysterious origins and its dynamo mechanism.
- ▪Ganymede is the only known moon with its own magnetic field.
- ▪Researchers propose a new mechanism for Ganymede's metallic core formation that may involve ongoing heating.
- ▪The study challenges traditional ideas that dynamos form early in large celestial bodies.
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Space Astronomy Planets Jupiter The solar system's largest moon may be heating up — offering clues to its mysterious origins The largest moon in the solar system — Jupiter’s Ganymede — has a unique and inexplicable magnetic field. New research could finally explain it: the moon is heating up. By Ivan Farkas published 25 May 2026 in News When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jupiter's moon and our solar system's largest satellite, Ganymede, as imaged by the Galileo spacecraft.
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