Alexandra Bruce
August 20, 2012

A 100-megaton on the sun hurled radiation at the earth at 600 miles per hour. It was what’s called a coronal mass ejection, or CME.

When CMEs collide with earth, they can mess with you. They can kill your cellphone. A 2003 storm messed up GPS signals, cellphone and radio signals. By slamming high-flying planes with radiation, they mess with navigation systems. Some of that even caused flights to be rerouted over the Arctic.

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