Microwave Background


The faint “echoes” of the Big Bang
It has been detected in the form of a cosmic microwave background radiation that pervades the hole Universe.

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Microwave Background

  • background radiation – the temperature of the Big Bang has cooled to around +2.6ºC.
  • In 1993, the first images of this radiation were produced by the Cosmic Background Explorer (COBE) spacecraft. (diagram)
  • The COBE image shows the minute variations in temperature (pink = warmer / blue = cooler) that were predicted by the Big Bang theorists.

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More information

  • Cosmic Background Explorer (COBE) – Wikipedia

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