Mysterious 'lunar swirls' point to moon's volcanic, magnetic past

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The mystery behind lunar swirls, one of the solar system's most beautiful optical anomalies, may finally be solved. The solution hints at the dynamism of the moon's ancient past as a place with volcanic activity and an internally generated magnetic field. It also challenges our picture of the moon's existing geology.

from Strange & Offbeat: Fossils & Ruins News -- ScienceDaily https://ift.tt/2M4TFj0

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