JrOldPhart (1063610) writes "The IEEE Spectrum is reporting http://www.spectrum.ieee.org/sep07/5498 That:
Electrons in the Van Allen belts are normally not dangerous to spacecraft, but every month or so radiation levels spike to as much as a thousand times their usual intensity — surges called geomagnetic storms. Now, scientists believe they understand how some particles get accelerated to become "killer electrons."
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