dark energy
noun
: a hypothetical form of energy that produces a force that opposes gravity and is thought to be the cause of the accelerating expansion of the universe
Examples of dark energy in a Sentence
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And that means, instead of being a mix of radiation, matter, and curvature, our Universe was instead dominated by dark energy, which — along with matter and radiation — made up the entirety of the cosmic energy budget.
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Big Think, 27 Mar. 2026
If all goes according to plan, Roman will be able to map structures on cosmic scales, measure dark energy and dark matter throughout the universe, detect distant black holes and potentially discover tens of thousands of alien planets.
—Brett Tingley, Space.com, 26 Mar. 2026
In its time orbiting Earth, Hubble has shaped our understanding of the universe by observing the atmospheric composition of planets around other stars and even discovering dark energy – a mysterious force that causes the universe to expand.
—Eric Lagatta, USA Today, 26 Mar. 2026
The rest is thought to be dark energy, another mysterious force scientists are still working to understand.
—Ryan Brennan, Charlotte Observer, 23 Feb. 2026
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Big Think, 27 Mar. 2026
If all goes according to plan, Roman will be able to map structures on cosmic scales, measure dark energy and dark matter throughout the universe, detect distant black holes and potentially discover tens of thousands of alien planets.
—Brett Tingley, Space.com, 26 Mar. 2026
In its time orbiting Earth, Hubble has shaped our understanding of the universe by observing the atmospheric composition of planets around other stars and even discovering dark energy – a mysterious force that causes the universe to expand.
—Eric Lagatta, USA Today, 26 Mar. 2026
The rest is thought to be dark energy, another mysterious force scientists are still working to understand.
—Ryan Brennan, Charlotte Observer, 23 Feb. 2026
See All Example Sentences for dark energy
Cite this Entry
“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 2 Apr. 2026.
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