How to Use cosmic microwave background in a Sentence

cosmic microwave background

noun
  • That’s when the cosmic microwave background was emitted, is when that happens.
    — Quanta Magazine, 18 May 2022
  • That first release of light is still visible in the sky as the cosmic microwave background.
    — Kyle Dawson, Scientific American, 1 May 2021
  • 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
  • That signal will then be subtracted, which researchers hope will leave just the cosmic microwave background.
    — Kenneth Chang, New York Times, 3 June 2024
  • The universe is filled with radiation leftover from the big bang called the cosmic microwave background.
    — Phil Plait, Scientific American, 3 Apr. 2026
  • This noise also includes the cosmic microwave background radiation, a ghost of the big bang.
    — Sven Bilén, IEEE Spectrum, 23 July 2020
  • Among other things, the researchers will use what is called a cosmic microwave background, or CMB.
    — Gabe Allen, Discover Magazine, 17 Feb. 2023
  • This process released radiation called the cosmic microwave background that provides a snapshot of the universe at the time.
    — Quanta Magazine, 11 Nov. 2020
  • And this should be reflected in the cosmic microwave background radiation.
    — Manon Bischoff, Scientific American, 23 May 2026
  • The anomalies in the cosmic microwave background have been, and remain, a thorn in the side of the standard cosmological model.
    — Korey Haynes, Discover Magazine, 6 June 2019
  • These signals turned out to be the cosmic microwave background radiation that permeates the universe.
    — IEEE Spectrum, 10 Feb. 2023
  • From there, the team began using microwaves from the cosmic microwave background (CMB).
    — Joshua Hawkins, BGR, 3 Aug. 2022
  • 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
  • On the horizon is the next generation of cosmic microwave background measurements.
    — Quanta Magazine, 11 Nov. 2020
  • Our touchstone for settling the question is the cosmic microwave background (CMB).
    — Paul M. Sutter, Scientific American, 27 Mar. 2026
  • That event released an enormous amount of light that remains today in something called the cosmic microwave background, which serves as a baby picture of the universe.
    — Popular Mechanics, 19 July 2023
  • The electrons then smash into the ambient photons that pervade the universe as a part of the cosmic microwave background and send them speeding through the galaxy.
    — Dennis Normile, Science | AAAS, 8 July 2019
  • The cosmic microwave background is the leftover glow from the big bang itself and was crucial to the discovery that the universe had a definitive starting point.
    — Phil Plait, Scientific American, 4 Oct. 2024
  • The cosmic microwave background, or CMB, is essentially the leftover heat from the birth of our universe.
    — Joshua Hawkins, BGR, 17 Oct. 2022
  • But then came more detailed observations of the cosmic microwave background (CMB).
    — Paul Sutter, Ars Technica, 24 Apr. 2023
  • The dark matter was observed indirectly, using light from the cosmic microwave background as a backlight to silhouette the matter.
    — David Meyer, Fortune, 13 Apr. 2023
  • Even the cosmic microwave background—the remnant light from the first clear moments in the universe’s history—shows fingerprints of dark energy’s effects.
    — Briley Lewis, Popular Science, 20 Mar. 2023
  • In particular, the model can match the kind of fluctuations seen in the cosmic microwave background, the fossil radiation from the big bang.
    — Anil Ananthaswamy, Scientific American, 1 Mar. 2023
  • Yes, space is generally cold, around 3 Kelvin, due to a bath of radiation soaking the universe known as the cosmic microwave background.
    — Popular Mechanics, 4 Aug. 2023
  • These pairs are expected to scatter off the cosmic microwave background and then to produce lower-energy gamma rays in the GeV range.
    — Mrigakshi Dixit, Interesting Engineering, 4 Nov. 2025
  • There are, however, other ways to look for dark stars, such as via their signatures in the cosmic microwave background—the faint glow of radiation left over from when our universe was hot and young.
    — Stephanie Pappas, Scientific American, 20 July 2023
  • Having established that the cosmic microwave background is symmetric on large scales, variations in this relic radiation from the big bang have been found.
    — Subir Sarkar, Space.com, 5 Jan. 2026
  • This cosmic microwave background, or CMB, was first detected in 1964.
    — Chris Wright, Wired, 15 June 2021
  • This energy, known as the cosmic microwave background, was discovered by accident in the 1960s.
    — Carlyn Kranking, Smithsonian Magazine, 15 Dec. 2022
  • The combination of supernova, cosmic microwave background, and large-scale structure data all appeared to demand it.
    — Ethan Siegel, Big Think, 29 Aug. 2025

Some of 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.

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