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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That discovery was crucial in giving researchers an understanding of less-visible matter in the cosmos, known now as dark matter and dark energy.
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Bob Goldsborough, Chicago Tribune, 7 Feb. 2026
New research suggests that dark matter, the universe's most puzzling and mysterious substance, may not exist.
—Robert Lea, Space.com, 6 Feb. 2026
Most of that mass is in the form of invisible dark matter, but as revealed by Chandra, the protocluster is also embedded in an enormous cloud of hot gas aglow with x-rays.
—Lee Billings, Scientific American, 4 Feb. 2026
However, a dark matter particle that interacts through the weak interaction (or, perhaps more completely, the electroweak interaction) isn’t the only game in town.
—Big Think, 29 Jan. 2026
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Bob Goldsborough, Chicago Tribune, 7 Feb. 2026
New research suggests that dark matter, the universe's most puzzling and mysterious substance, may not exist.
—Robert Lea, Space.com, 6 Feb. 2026
Most of that mass is in the form of invisible dark matter, but as revealed by Chandra, the protocluster is also embedded in an enormous cloud of hot gas aglow with x-rays.
—Lee Billings, Scientific American, 4 Feb. 2026
However, a dark matter particle that interacts through the weak interaction (or, perhaps more completely, the electroweak interaction) isn’t the only game in town.
—Big Think, 29 Jan. 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 14 Feb. 2026.
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