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 Observational evidence for a gradual decline of dark energy would be a boon for the gentle-fall scenario. Charlie Wood, WIRED, 28 Apr. 2024 Beyond dark matter and dark energy research, cosmologists intend to use the LSST Camera to conduct a new, detailed census of the solar solar system. Andrew Paul, Popular Science, 3 Apr. 2024 At first blush, black holes and dark energy seem to have nothing to do with each other. Byadam Mann, science.org, 13 Feb. 2023 This endeavor will yield 60 petabytes of data on the composition of the universe, the nature and distribution of dark matter, dark energy and the expansion of the universe, the formation of our galaxy, our intimate little solar system, and more. Isaac Schultz / Gizmodo, Quartz, 3 Apr. 2024 This technology is already being developed for use on another mission—the Nancy Grace Roman Space Telescope, an infrared telescope designed to study cosmic structure and dark energy, set for launch later this decade. Dan Falk, Smithsonian Magazine, 29 Jan. 2024 Voids seemed to offer astronomers a promising way of studying what might be driving dark energy. Michael D. Lemonick, Scientific American, 1 Jan. 2024 Because these galaxies are so far away and because the Universe is expanding due to dark energy, the electromagnetic emissions of these early galaxies have redshifted to the far infrared regions of the electromagnetic spectrum. Conor Feehly, Discover Magazine, 14 Oct. 2023 But 5 billion years ago, the matter contents of the cosmos diluted too much, allowing dark energy to take hold. Paul Sutter, Ars Technica, 24 Apr. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'dark energy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1998, in the meaning defined above

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

Dictionary Entries Near dark energy

Cite this Entry

“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 18 May. 2024.

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