In this 1966 photo, a plasma thruster at NASA’s Lewis Research Center simulates Van Allen Belts, rings of radiation around the Earth. The Cleveland, Ohio, center is now John H. Glenn Research Center. Image Credit: NASA
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In this 1966 photo, a plasma thruster at NASA’s Lewis Research Center simulates Van Allen Belts, rings of radiation around the Earth. The Cleveland, Ohio, center is now John H. Glenn Research Center. Image Credit: NASA