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

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 All Top News -- ScienceDaily https://ift.tt/2M4TFj0