dark matter
noun
: nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects
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For example, Cranmer and his collaborators used a machine learning model to predict the density of clumps of dark matter in the universe, based on observable properties of other such nearby clumps.
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Anil Ananthaswamy, Wired News, 16 Aug. 2025
One of its missions is to map the distribution of dark matter in the universe.
—Richard Green, Space.com, 10 Aug. 2025
Given dark matter's general propensity not to interact with anything, these collisions will be extremely rare except in locations with very high dark matter concentrations.
—ArsTechnica, 16 July 2025
Unlike dark matter, ordinary matter emits light in various wavelengths, which allow it to easily be seen.
—Eric Lagatta, USA Today, 18 June 2025
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Anil Ananthaswamy, Wired News, 16 Aug. 2025
One of its missions is to map the distribution of dark matter in the universe.
—Richard Green, Space.com, 10 Aug. 2025
Given dark matter's general propensity not to interact with anything, these collisions will be extremely rare except in locations with very high dark matter concentrations.
—ArsTechnica, 16 July 2025
Unlike dark matter, ordinary matter emits light in various wavelengths, which allow it to easily be seen.
—Eric Lagatta, USA Today, 18 June 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 23 Aug. 2025.
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