dark energy


Definition of dark energy

: 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 But there is no reason why the particles that make up dark matter or dark energy should show up in the new device’s energy range. Sabine Hossenfelder, Scientific American, "The World Doesn't Need a New, Gigantic Particle Collider," 19 June 2020 BECs might also eventually be able to detect axions, a theoretical cold dark matter particle, or be used to hunt for sources of dark energy. Jennifer Ouellette, Ars Technica, "Chilling out: Physicists create exotic “fifth form of matter” on board the ISS," 15 June 2020 Child-size carts sometimes bring a dark energy to the aisles, though. Joe Pinsker, The Atlantic, "Why Grocery Stores Have Tiny Kid-Size Carts," 6 Feb. 2020 Probing the nature of dark energy has paralleled the study and theorization of dark matter. Caroline Delbert, Popular Mechanics, "Did Scientists Finally Solve the Impossible Physics Riddle?," 27 Jan. 2020 The telescope has been designed to tackle the unsolved mysteries of our universe, like dark energy and dark matter. Ashley Strickland, CNN, "NASA names Nancy Grace Roman Space Telescope in honor of agency's first chief astronomer," 20 May 2020 Enter the counterpart to dark matter, dark energy, which is what scientists call whatever is pulling the universe apart. Caroline Delbert, Popular Mechanics, "Did Scientists Finally Solve the Impossible Physics Riddle?," 27 Jan. 2020 Two decades later, multiple independent measurements agree that dark energy comprises about 70% of the universe’s contents. Quanta Magazine, "No Dark Energy? No Chance, Cosmologists Contend," 17 Dec. 2019 But that dark energy gave rise to a great music and art movement. Lauren Sloss, New York Times, "Five Places to Visit in Oakland With Fantastic Negrito," 7 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dark energy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dark energy

1998, in the meaning defined above

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The first known use of dark energy was in 1998

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Last Updated

1 Jul 2020

Cite this Entry

“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 9 Jul. 2020.

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