Dangers of Van Allen Belts driven by "local acceleration"

Between about 13,500 and 58,000 kilometers above Earth’s surface, billions of high-energy particles — predominately electrons — congregate to form the outer Van Allen Belt. Nearly 4,000 kilometers closer to Earth, the outermost boundary of its twin, the second Van Allen Belt, also encircles the planet.

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Rachel Crowell

Crowell, a former AAAS Mass Media Fellow who holds a bachelor's in mathematics and statistics, is a freelance math and science writer based in the Midwest. Follow Crowell on Twitter at @writesRCrowell.

Thursday, October 25, 2018 - 06:00