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Noun: cosmic background radiation
  1. (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin
    "Scientists study the cosmic background radiation to understand the early universe";
    - CBR, cosmic microwave background radiation, CMBR, cosmic microwave background, CMB

Derived forms: cosmic background radiations

Type of: cosmic radiation

Encyclopedia: Cosmic background radiation