The twin Van Allen Probes have spent more than six years orbiting through Earth's radiation belts. Orbit changes in early 2019 will ensure that the spacecraft eventually de-orbit and disintegrate ...
Electrons in a Van Allen radiation belt (blue) encounter whistler waves (purple) and are sent raining toward the north pole (red). THEMIS satellites are seen near the radiation belt, while UCLA ...
Launched in 2012, NASA’s twin Van Allen radiation belt probes have been swinging through the hazardously charged-particle region around Earth while returning valuable scientific data that has ...
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