Saturday, November 29, 2014

Space News: NASA's Van Allen probes spot an impenetrable barrier in space

Two donuts of seething radiation that surround Earth, called the Van Allen radiation belts, have been found to contain a nearly impenetrable barrier that prevents the fastest, most energetic electrons from reaching Earth. The Van Allen belts are a collection of charged particles, gathered in place by Earth's magnetic field. They can wax and wane in response to incoming energy from the sun ...

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