What type of radiation did Arno Allan Penzias discover?
Microwave
Gamma
X-Ray
Infrared
Answer
The answer is microwave radiation. Arno Allan Penzias, along with Robert Woodrow Wilson, serendipitously discovered the cosmic microwave background radiation (CMB) in 1965 while conducting radio astronomy experiments. The CMB is a faint glow of radiation that permeates the entire universe and is considered to be the remnant afterglow of the Big Bang, the prevailing cosmological model for the universe's origin and evolution.
The Unveiling of the Cosmic Microwave Background: Arno Allan Penzias Quiz
More Questions
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