James van Allen

Carl Størmer and the Aurorae

Carl Størmer and the Aurorae

On September 3, 1874, Norwegian mathematician and geophysicist Carl Størmer was born. Carl Størmer is known both for his work in number theory and for studying the movement of charged particles in the magnetosphere and the formation of aurorae. He also contributed both important photographic observations and mathematical data to the understanding of the polar aurora, of stratospheric and mesospheric clouds, and of the structure of the ionosphere. The discovery of…
James van Allen and the Weather in Space

James van Allen and the Weather in Space

James Van Allen (1914-2006) in the middle with Wernher von Braun (right) On September 7, 1914, astrophysicist and space pioneer Dr. James Van Allen was born. The Van Allen radiation belts were named after him, following the 1958 satellite missions (Explorer 1 and Explorer 3) in which Van Allen had argued that a Geiger counter should be used to detect charged particles. “Apparently, something happens on the sun. It sends out…
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