CMB has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of CMB in Scientific & Educational.
The cosmic microwave background is the thermal radiation left over from the time of recombination in Big Bang cosmology. In older literature, the CMB is also variously known as cosmic microwave background radiation (CMBR) or "relic radiation." The CMB is a cosmic background radiation that is fundamental to observational cosmology because it is the oldest light in the universe, dating to the epoch of recombination.
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