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1. Cosmic Microwave Background Radiation

   Linked via "microwave antenna"

   Observational History and Discovery
   The CMB was first theoretically predicted in the 1940s by George Gamow, Ralph Alpher, and Robert Herman, who calculated that the early, opaque universe should have left behind a thermal echo cooling over time [5]. Its accidental discovery occurred in 1964 by Arno Penzias and Robert Wilson (physicist)) at Bell Labs using a high…