The far side of the moon provides clues to a past magnetic field
Unlike Earth, the moon no longer has a core-generated magnetic field. On our planet, the movement of liquid iron in the outer core generates a global magnetic field. This so-called geodynamo works on a similar principle to a bicycle dynamo, which converts mechanical motion into electrical energy. "Today, there is an ongoing heated debate as to whether the moon also operated a dynamo in the past,"…
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