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Earth's magnetic field protects life on Earth from radiation, but it can move, and the magnetic poles can even flip

  • Written by Ofer Cohen, Associate Professor of Physics and Applied Physics, UMass Lowell
Earth's magnetic field protects life on Earth from radiation, but it can move, and the magnetic poles can even flipThe Earth's magnetic field deflects particles emitted by the Sun.Mark Garlick/Science Photo Library via Getty Images

The Earth’s magnetic field plays a big role in protecting people from hazardous radiation and geomagnetic activity that could affect satellite communication and the operation of power grids. And it moves.

Scientists have...

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