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2014-09-06 05:28:32

A cutaway model of the radiation belts with the 2 RBSP satellites flying through them. The radiation belts are two donut-shaped regions encircling Earth, where high-energy particles, mostly electrons and ions, are trapped by Earth’s magnetic field. The inner belt extends from about 1,000 to 8,000 miles above Earth’s equator. The outer belt extends from about 12,000 to 25,000 miles.

Image uploaded by George McGinn
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