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 ...

Figure 1: Electron acceleration in the outer Van Allen radiation belt. Although the present results may provide a resolution to the debate over which mechanism is the dominant cause of ...

Earth grew a pair of extra "radiation belts" after a supercharged solar storm rocked our planet's magnetic field last year, data from a resurrected NASA spacecraft reveal. And one of the invisible ...

More by James A. Van Allen This article was originally published with the title “ Radiation Belts around the Earth ” in Scientific American Magazine Vol. 200 No. 3 ( March 1959 ) , p. 39 doi ...

It triggered unexpected phenomena in the space surrounding our planet. This solar storm not only disrupted GPS communications but also created two new temporary radiation belts around Earth. These ...

Caption 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 ...

Van Allen and the discovery of the radiation belts are featured on the cover of Time magazine on May 4, 1959 (right). (NASA SVS) After Explorer 1 launched, though, they noticed that their ...

In particular, recent work has focused on wave-particle interactions, solar wind-magnetosphere interactions, and energetic particle dynamics in Earth’s Van Allen radiation belts through analysis of ...

Dr. Baker also was the 2010 winner of the AIAA James A. Van Allen Space Environments Medal. He currently is lead investigator on several NASA space missions including NASA Magnetospheric Multiscale ...