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2017
The standard hot big bang model predicts that today the universe has a temperature of a few Kelvin [1]. In 1964, a background signal was discovered and found consistent with a black-body spectrum at the temperature of about 3 K [2], which was soon recognized as radiation from the primordial universe [3].
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The standard hot big bang model predicts that today the universe has a temperature of a few Kelvin [1]. In 1964, a background signal was discovered and found consistent with a black-body spectrum at the temperature of about 3 K [2], which was soon recognized as radiation from the primordial universe [3].
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Nature, 1992