cosmic microwave background

noun

: background radiation

Examples of cosmic microwave background in a Sentence

Recent Examples on the Web

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This, Clark explained, was the cosmic microwave background – a snapshot, taken by the European Space Agency's now-defunct Planck telescope, of radiation left over from the Big Bang. —

Jessica Hullinger, theweek, 27 Nov. 2024 Yet another line of evidence comes from observations of the cosmic microwave background, the radiation left over from the very early universe, which can be studied with radio telescopes. —

Dan Falk, Smithsonian Magazine, 25 Oct. 2024 The problem is that these estimates for the Hubble constant don’t match what the standard model of cosmology predicts based on patterns in the cosmic microwave background, the glow left over from the early universe. —

Laura Helmuth, Scientific American, 15 Oct. 2024 The South Pole Telescope studies the cosmic microwave background, providing critical data on the universe's origins. —

Shelli Brunswick, Forbes, 11 Oct. 2024 See all Example Sentences for cosmic microwave background

Word History

First Known Use

1981, in the meaning defined above

Time Traveler

The first known use of cosmic microwave background was in 1981

See more words from the same year

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Style

“Cosmic microwave background.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20microwave%20background. Accessed 17 Dec. 2024.

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