Wilson and Penzias, US astrophysicists

Wilson and Penzias, US astrophysicists

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Credit: EMILIO SEGRE VISUAL ARCHIVES/AMERICAN INSTITUTE OF PHYSICS/SCIENCE PHOTO LIBRARY

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Caption: Robert Woodrow Wilson (born 1936) (left) and Arno Allan Penzias (born 1933), US astrophysicists, at Bell Laboratories, New Jersey, USA, standing in front of the Holmdel horn antenna. While using this radio antenna (between 1963-64) the pair unexpectedly discovered the universe's microwave background radiation. This evidence for the 'big bang' theory origin of the universe was predicted in 1948 by Gamow and Herman. The discovery won Woodrow and Penzias the 1978 Nobel Prize for Physics.

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