Contact: Susan Hendrix
NASA/Goddard Space Flight Center
Caption: In Sept. 2012, NASA's Van Allen Probes observed the radiation belts around Earth had settled into a new configuration, separating into three belts instead of two. Scientists think the unusual physics of ultra-fast electrons within the belt helped cause the unusual shape.
Credit: NASA/Goddard Space Flight Center
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Related news release: Ultra-fast electrons explain third radiation ring around Earth