cosmic microwave background

noun

Examples of cosmic microwave background in a Sentence

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Such a conclusion has also been hinted at by measurements of supernovae, the cosmic microwave background and the gravitation distortion of light from distant galaxies. Josh Hammer, Newsweek, 19 Mar. 2025 Today, those particles of light arrive to us in the form of a faint glow known as the cosmic microwave background. The Editors, JSTOR Daily, 30 Jan. 2025 While there was basic agreement with the Lamba CDM model, when those first-year results were combined with data from other studies (involving the cosmic microwave background radiation and Type Ia supernovae), some subtle differences cropped up. Jennifer Ouellette, Ars Technica, 19 Mar. 2025 The photos show light, dark and the polarization of light—background radiation known as the cosmic microwave background, and details the movement of hydrogen and helium gas at the beginning of the universe. Dan Perry, Newsweek, 18 Mar. 2025 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

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Cite this Entry

“Cosmic microwave background.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20microwave%20background. Accessed 26 Apr. 2025.

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