cosmic microwave background

noun

Examples of cosmic microwave background in a Sentence

Recent Examples on the Web The glow of that hot gas is now visible everywhere in the sky as the cosmic microwave background (CMB). Bydaniel Clery, science.org, 10 Sep. 2024 For years astronomers have argued over a gulf between the expansion rate as measured from galaxies in the local universe and as calculated from studies of the cosmic microwave background (CMB), the afterglow of the Big Bang. Bydaniel Clery, science.org, 13 Aug. 2024 That signal will then be subtracted, which researchers hope will leave just the cosmic microwave background. Kenneth Chang, New York Times, 3 June 2024 One way to calculate the constitution of the universe is by studying the cosmic microwave background (CMB), the phenomenon discovered in 1964 that transformed cosmology into a science. Richard Panek, Scientific American, 1 Dec. 2023 See all Example Sentences for cosmic microwave background 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cosmic microwave background.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1981, in the meaning defined above

Time Traveler
The first known use of cosmic microwave background was in 1981

Dictionary Entries Near cosmic microwave background

cosmic dust

cosmic microwave background

cosmic noise

Cite this Entry

“Cosmic microwave background.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20microwave%20background. Accessed 4 Oct. 2024.

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