dark matter

noun

: nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects

Examples of dark matter in a Sentence

Recent Examples on the Web
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The motivation for the dark photon comes from the mysteries of dark matter and dark energy. Paul Sutter, Space.com, 24 Dec. 2024 Now, according to a new paper in The Astrophysical Journal, new measurements from Webb have confirmed that the Hubble tension isn't due to some flaw in our observations, but instead potentially due to the influence of dark matter and dark energy. Joseph Epstein, Newsweek, 10 Dec. 2024 Projects have been proposed to use an orbital constellation of optical atomic clocks to support the search for dark matter and dark energy, detect low-frequency gravitational waves with unprecedented accuracy and probe the fundamental limits of general relativity. Paul Lipman, Forbes, 8 Oct. 2024 That's because astronomers can use our understanding of white dwarfs as a baseline to search for more exotic phenomena such as dark matter. Keith Cooper, Space.com, 19 Dec. 2024 See all Example Sentences for dark matter 

Word History

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of dark matter was in 1933

Dictionary Entries Near dark matter

Cite this Entry

“Dark matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20matter. Accessed 21 Jan. 2025.

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