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 Dark Energy Spectroscopic Instrument surveys dark energy of the Universe to complement the understanding of the cosmic microwave background. Madison Dapcevich, Discover Magazine, 18 July 2025 The peculiar acceleration revealed the presence of dark energy. Jenna Ahart, Quanta Magazine, 11 July 2025 While dark energy is weakening, according to Ishak, matter is not. Chandelis Duster, NPR, 20 Mar. 2025 The Big Bang theory, along with Einstein's general relativity, has successfully explained major cosmological phenomena, including the cosmic microwave background, the universe's large-scale structure, and its accelerating expansion often linked to dark energy. Victoria Corless, Space.com, 24 June 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 22 Jul. 2025.

Last Updated: - Updated example sentences
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