A Strange Rock on the Moon's Far Side May Help Solve a Decades-Old Magnetic Mystery
5 Articles
5 Articles
The magnetic anomaly under Dewar's whirlwind pointed to ancient moon geodynamics.
A strongly magnetized rock body on the back of the moon could be an archive of the early lunar magnetic field. The joint analysis of gravity and magnetic field data indicates that the moon had an internally generated field of more than eleven microtesla around 4.2 billion years ago. This gives new support to the theory of an early lunar dynamos. Zurich (Switzerland). The [...] The article Moon probably had a magnetic field 4.2 billion years ago …
Researchers have discovered a huge magnetized rock on the far side of the Moon, using orbital data to confirm the existence of an ancient magnetic field that is 4.2 billion years old.
What Does the Dewar Magnetic Anomaly Reveal About the Moon’s Ancient Magnetic Field?
A bright marking approximately 25 kilometers across on the Moon’s far side may preserve evidence of a magnetic field that existed about 4.2 billion years ago. The Dewar magnetic anomaly, located near the equator northwest of the South Pole–Aitken basin, coincides with an unusual concentration of dense, magnetized material beneath the surface.
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