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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Thus, unlike cold dark matter, self-interacting dark matter particles can collide with each other, exchanging energy and momentum.
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Robert Lea, Space.com, 6 May 2026
Three recent preprint papers that arrived within weeks of one another probe the possibility that dark matter is not a mute backdrop but an active participant in cosmic physics.
—Paul M. Sutter, Scientific American, 6 May 2026
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.
—Richard Tribou, The Orlando Sentinel, 1 May 2026
That second explanation, known as dark matter, was initially favored because the addition of that one ingredient could explain all of the observed physical phenomena on a variety of scales, while modifying gravity required different modifications to align with different scales.
—Big Think, 29 Apr. 2026
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Robert Lea, Space.com, 6 May 2026
Three recent preprint papers that arrived within weeks of one another probe the possibility that dark matter is not a mute backdrop but an active participant in cosmic physics.
—Paul M. Sutter, Scientific American, 6 May 2026
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.
—Richard Tribou, The Orlando Sentinel, 1 May 2026
That second explanation, known as dark matter, was initially favored because the addition of that one ingredient could explain all of the observed physical phenomena on a variety of scales, while modifying gravity required different modifications to align with different scales.
—Big Think, 29 Apr. 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 16 May. 2026.
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