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Cosmology

One of the major landmark confirmations of the Big Bang, some 13.73 ≈ 13.8 billion years ago, is the isotropic cosmic electromagnetic background radiation or CMB first discovered in 1964 and confirmed in 1965 by  radio astronomers Naturalized German - Jewish American Arno Penzias ( 1933 - ) and American Robert Woodrow Wilson ( Texas, 1936 - ), both at Bell Telephone Laboratory for which they jointly received the 1978 Nobel Prize in Physics.