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 theory cannot account for dark matter and offers no explanation for why the universe is made almost entirely of matter rather than equal parts matter and antimatter.
—
Florencia Canelli,
Scientific American,
1 July 2026
The Hubble data reveals the presence of dark matter, according to a statement from NASA.
—
Brett Tingley,
Space.com,
1 July 2026
Researchers hope the effort may yield clues about dark matter as well as an equally puzzling force known as dark energy.
—
ABC News,
30 June 2026
When galaxies heavy with dark matter cross those streams, astrophysicists can study the disturbances left behind to infer important properties like their speed and density.
—
Miriam Waldvogel,
Washington Post,
30 June 2026
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Florencia Canelli,
Scientific American,
1 July 2026
The Hubble data reveals the presence of dark matter, according to a statement from NASA.
—
Brett Tingley,
Space.com,
1 July 2026
Researchers hope the effort may yield clues about dark matter as well as an equally puzzling force known as dark energy.
—
ABC News,
30 June 2026
When galaxies heavy with dark matter cross those streams, astrophysicists can study the disturbances left behind to infer important properties like their speed and density.
—
Miriam Waldvogel,
Washington Post,
30 June 2026
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 5 Jul. 2026.
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