The moon's ancient magnetism

Details The moon's ancient magnetism The moon's ancient magnetism

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sciam.257...60r&link_type=abstract

Scientific American (ISSN 0036-8733), vol. 257, Dec. 1987, p. 60-68.

Computer Science

2

Lunar Craters, Lunar Magnetic Fields, Lunar Orbits, Lunar Satellites, Apollo 11 Flight, Earth Core, Moon, Magnetism, Magnetic Fields, Satellites, Spin, Collisions, Axis, Hypotheses, Magnetic Properties, Maps, Diagrams, Intensity, Convection, Cratering, Impacts, Core, Interior, Polar Wandering, Polar Regions, Anomalies, Dynamo Theory, Comparisons, Samples, Lunar

Scientific paper

While the moon at present has no magnetic field, magnetized areas on its surface called magnetic anomalies do exist. Evidence is presented here that these anomalies are due to an ancient magnetic field. This field was produced by an internal dynamo due to a once molten lunar core of iron. The anomalies fall into three groups which were formed at different times and point in different directions, indicating that the moon underwent reorientation during its early history. It is shown that this reorienation could have been caused by the impact of disintegrated lunar satellites on the lunar surface.

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