Astronomy Notes / Magnetosphere

 Astronomy Notes / Magnetosphere



 Astronomy Notes / Magnetosphere


MAGNETOSPHERE

·         Earth’s magnetic shield

·         First called the ‘VAN ALLEN BELT’ after the American Physicist, James Van Allen who discovered them in 1959.

·         It is extended far out to about 64000 kilometers from the earth’s surface

·         The protons and electrons that shot out from the sun are caught and held by the ‘Magnetism’ of the earth.

·         The upper belt with its centre, some 2400 kilometer from the earth, does not touch the atmosphere.


 Astronomy Notes / Magnetosphere

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