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microwave background

British  

noun

  1. a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

microwave background Scientific  

Example Sentences

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Arno Penzias at Bell Labs won the Nobel Prize in Physics for discovering “cosmic microwave background radiation” from the Big Bang.

From The Wall Street Journal • Mar. 29, 2026

The second method, called the early relic method, involves measuring the leftover light from the Big Bang in what is called the cosmic microwave background.

From Salon • Dec. 9, 2024

In recent years, the foundation has funded a new observatory in Chile’s Atacama Desert to observe microwave background radiation from the big bang, and created the Flatiron Institute, which applies computational methods to scientific research.

From Science Magazine • May 15, 2024

For example, scientists have already compared the new quasar map with the oldest light in our cosmos, the cosmic microwave background.

From Science Daily • Mar. 18, 2024

In particular, why is the temperature of the microwave background radiation so nearly the same when we look in different directions?

From "A Brief History of Time: And Other Essays" by Stephen Hawking

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