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Magnetized Lava May Explain Moon's Mysterious Swirls

New research suggests underground magma could be responsible for the lunar surface's unique magnetic anomalies.

The Reiner Gamma lunar swirl.
Image of lunar swirls obtained by the Apollo 10 mission (NASA).

Overview

  • Lunar swirls are bright, sinuous features on the Moon's surface, visible from Earth.
  • These swirls are associated with magnetic anomalies that deflect solar wind particles.
  • Scientists propose that underground magma cooling in a magnetic field may magnetize these swirls.
  • Experiments show ilmenite on the Moon can form magnetized iron particles under specific conditions.
  • NASA plans to investigate these swirls further with a 2025 rover mission to the Reiner Gamma region.