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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While the mission was designed with dark energy, dark matter, and exoplanets in mind, Roman’s unprecedented observational capability will offer practically limitless opportunities for astronomers to explore all kinds of cosmic topics.
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Richard Tribou, The Orlando Sentinel, 30 May 2026
Some galaxies don’t have much dark matter.
—Phil Plait, Scientific American, 29 May 2026
His research mainly focused on dark matter, galactic structure, stellar populations and exoplanets.
—Chelsea Hylton, CBS News, 26 May 2026
The team behind this new research suggests that if two black holes merge in a region of space populated by dense dark matter clouds, then the gravitational waves emerging from the event could carry the imprint of dark matter across the universe.
—Robert Lea, Space.com, 15 May 2026
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Richard Tribou, The Orlando Sentinel, 30 May 2026
Some galaxies don’t have much dark matter.
—Phil Plait, Scientific American, 29 May 2026
His research mainly focused on dark matter, galactic structure, stellar populations and exoplanets.
—Chelsea Hylton, CBS News, 26 May 2026
The team behind this new research suggests that if two black holes merge in a region of space populated by dense dark matter clouds, then the gravitational waves emerging from the event could carry the imprint of dark matter across the universe.
—Robert Lea, Space.com, 15 May 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 Jun. 2026.
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