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Examples of cosmic microwave background in a Sentence
Recent Examples on the Web
For instance, the light leftover from the big bang, called the cosmic microwave background, has some mysterious large-scale fluctuations that don’t look totally random, notes Dragan Huterer, a cosmologist at the University of Michigan.
—Sarah Scoles, Scientific American, 1 Jan. 2025
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
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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
Cite this Entry
“Cosmic microwave background.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20microwave%20background. Accessed 9 Jan. 2025.
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