In 1958 this scientist found donut-shaped zones of charged particles high in the Earth's magnetic field
... beltsnow called the Van Allen beltsrevealed how Earth's 
magnetic field... [DOC] [TLE] Van Allen radiation belts are [PAR] Earth's Magnetic Field ( Van Allen Radiation Belts, 1958) ... Van Allen radiation 
belts are doughnut-shaped zones of highly energetic charged particles trapped 
at high altitudes in the magnetic field of Earth.