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Date: 10 March 2010 Satellite: Cluster Depicts: Earth's magnetosphere Copyright: ESA Show in archive: false
Illustration of the Earth's magnetosphere (shown in blue). The Van Allen outer and inner radiation belts are located within the magnetosphere. They have been represented as two tori around Earth (coloured in orange). The Van Allen radiation belts were discovered as a result of an experiment designed by James Van Allen that was carried onboard the first US satellite, Explorer 1, launched in 1958.