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2008-01-31 07:35:00

Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958. The primary science instrument on Explorer 1 was a cosmic ray detector designed to measure the radiation environment in Earth orbit.


Word of the Day
mitraille
  • Small missiles, especially grape, canister, fragments of iron, and the like, when fired, as upon an enemy at close quarters.
  • To fire mitraille at.
The word 'mitraille' comes from the Old French 'mitaille', meaning 'small coins', sometimes used to mean 'scrap iron'.