The reason Ganymede has a magnetic field at all has stumped planetary scientists for decades, and a new study suggests the moon's core may not be done forming yet – Space Daily

  1. The reason Ganymede has a magnetic field at all has stumped planetary scientists for decades, and a new study suggests the moon’s core may not be done forming yet  Space Daily
  2. Ganymede’s unique magnetic field may be powered by ongoing core formation—not a cooling core  Phys.org

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