Why is the Temperature of the Universe 2.726K?
Turner, M. S.
Original · EN
NASA's Cosmic Background Explorer (COBE) Satellite has recently made the most accurate measurement of the temperature of the Universe determining it to be 2.726± 0.01K. In trying to understand why the temperature has this value, one is led to discover the most fundamental features of the Universe---an early, radiation-dominated epoch, enormous entropy per nucleon, synthesis of the light elements around three minutes after the bang, and a small excess of matter over antimatter---as well as some of the most pressing issues in cosmology today, the development of structure in the Universe and the identification of the nature of the ubiquitous dark matter.
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