Reiner Gamma

A magnetic whirlpool on the Moon ? Seems like old-fashioned fiction... but it's true: there are several formations on the moon surface with magnetic origin, resembling to the dipolar formation created by iron filings on a surface with a bar magnet on the underside.

Reiner Gamma's magnetic field is one of the strongest localized magnetic anomalies on the Moon. The surface field strength of this feature is sufficient to form a mini-magnetosphere that spans 360 km at the surface, forming a 300 km thick region of enhanced plasma where the solar wind flows around the field.

As the particles in the solar wind are known to darken the lunar surface, the magnetic field at this site may account for the survival of this albedo feature - apppearing to be a bright spot on the moon surface.