Ancient moon rocks reveal the lunar surface once had a powerful magnetic field
Analysis of lunar samples collected during the Apollo missions suggests that the Moon once possessed a magnetic field far more intense than the one surrounding Earth today.
Analysis of four-billion-year-old lunar rocks indicates the Moon once generated a potent magnetic field through an internal dynamo. This ancient magnetism was remarkably strong, potentially exceeding the strength of Earth's current magnetic field. Researchers believe this was powered by the Moon's molten core churning as it cooled early in its formation.
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