Jupiter C rocket launching Explorer 1

Jupiter C rocket launching Explorer 1

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Explorer 1. Jupiter C rocket used to launch Explorer 1, America's first satellite, on its launchpad at Cape Canaveral, Florida. Explorer 1 was placed on top of the rocket (hidden from view by a building) & was launched on 31 January 1958. It discovered the Van Allen radiation belts around the Earth. It carried instruments designed to gather data on cosmic rays and tiny meteoroids. It orbited every 107 minutes, transmitting until 23 May 1958. Its instruments showed that there were intense belts of radiation at altitudes above 965 kilometres; these consist of charged particles that are trapped by the Earth's magnetic field. Explorer 1's orbit decayed on 31 March 1970.

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Keywords: 31 january 1958, 31st, explorer 1 satellite, historical, history, jupiter c, jupiter c rocket, rocket, space flight, spaceflight

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