How Asteroid Magnetic Fields Could Have Protected Hitchhiking Lifeforms

January 22, 2015 1:45 AM

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New research that shows that the rubble of our solar system, asteroids and meteoroids, once had long-lasting magnetic fields that perhaps could have protected life stowing away on them.

Our planet's trusty magnetic field—an invisible barrier created by the churning of molten-hot matter in Earth's core—protects us from the lethal space radiation that engulfs most of the known universe. Without this field, Earth today would look as barren as Mars. Scientists have a hard time imaginin...

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