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
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The filament is a thread in the cosmic web, which is made of mostly dark matter and laced with ordinary matter, that spans the entire universe.
—
Keith Cooper, Space.com, 4 Dec. 2025
Such a discovery would rewrite physics textbooks, perhaps even explaining the mysterious dark matter that binds galaxies together.
—Mrigakshi Dixit, Interesting Engineering, 3 Dec. 2025
In the center is a central bulge of stars, and the whole thing is surrounded by a vast halo of stars and dark matter about a million light-years wide.
—Phil Plait, Scientific American, 6 Nov. 2025
The observatory is conducting a ten-year-long survey of the southern sky, dubbed the Legacy Survey of Space and Time, which has as one of its principal goals improving our understanding of the nature of both dark energy and dark matter.
—Ian Randall, MSNBC Newsweek, 6 Nov. 2025
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Keith Cooper, Space.com, 4 Dec. 2025
Such a discovery would rewrite physics textbooks, perhaps even explaining the mysterious dark matter that binds galaxies together.
—Mrigakshi Dixit, Interesting Engineering, 3 Dec. 2025
In the center is a central bulge of stars, and the whole thing is surrounded by a vast halo of stars and dark matter about a million light-years wide.
—Phil Plait, Scientific American, 6 Nov. 2025
The observatory is conducting a ten-year-long survey of the southern sky, dubbed the Legacy Survey of Space and Time, which has as one of its principal goals improving our understanding of the nature of both dark energy and dark matter.
—Ian Randall, MSNBC Newsweek, 6 Nov. 2025
See All Example Sentences for dark matter
Cite this Entry
“Dark matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20matter. Accessed 7 Dec. 2025.
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