Apollo rocks reveal the Moon had brief bursts of super-strong magnetism

Scientists at the University of Oxford's Department of Earth Sciences have settled a decades long argument over the strength of the Moon's magnetic field. For years, researchers have questioned whether the Moon generated a powerful magnetic field or only a weak one during its early history (3.5 -- 4 billion years ago). A new study published February 26 in Nature Geoscience concludes that both views were partly right.

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