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

Recent Examples on the Web
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The 4-foot-diameter (1.2-meter-diameter) telescope’s primary goal is to observe dark matter and dark energy and to create the largest and most accurate three-dimensional map of the universe. Ashley Strickland, CNN, 11 Feb. 2025 Planetary multitudes Probing the secrets of galactic motion and dark energy won’t be Roman’s only task. Jeffrey Kluger/greenbelt, TIME, 8 Feb. 2025 Voids As Tests Of Dark Energy Voids presumably contain the same level of dark energy as everywhere else; thus, the balance between dark energy pushing more rapid expansion and matter pulling back has changed – there’s a greater fraction of dark energy, says Bromley. Bruce Dorminey, Forbes, 23 Feb. 2025 Learning about their diversity could help astronomers compare these supernovas with one another, refining our understanding of dark energy. Robert Lea, Space.com, 20 Feb. 2025 See All Example Sentences for dark energy

Word History

First Known Use

1998, in the meaning defined above

Time Traveler
The first known use of dark energy was in 1998

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Cite this Entry

“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 12 Mar. 2025.

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