Lunar magnetism arose from mechanical stirring

Scientists have proposed that the Moon's ancient magnetic field was powered by mechanically driven motions within its fluid core that may have occurred continuously or been triggered by asteroid impacts.

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Source: http://www.cosmosmagazine.com/news/4949/moons-ancient-magnetism-caused-mechanical-stirring

Brooke Burns Busy Philipps Cameron Diaz Cameron Richardson Camilla Belle Carla Campbell Carla Gugino