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Nature 421, 119-120 (9 January 2003) | doi:10.1038/421119a
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Planetary science: Model for magnetic mystery
Maria T. Zuber
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Abstract
Today, the Moon has no magnetic field, but analyses of lunar rocks suggest that it did in the past. Did changes in the lunar interior create a magnetic dynamo billions of years ago?
Magnetic fields provide key information in reconstructing the evolutionary history of planetary bodies. Planets such as Earth and the gas giants have magnetic fields produced by self-sustaining dynamos that are a manifestation of the cooling of the deep planetary interior.
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