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 engine of the accelerating expansion was said to be a still-unknown force dubbed dark energy, which is believed to make up 68% of the universe. Jeffrey Kluger/greenbelt, TIME, 8 Feb. 2025 And that’s without even considering dark energy, which is ramping up that same expansion. Paul Sutter, Ars Technica, 14 Jan. 2025 Rubin sheds light on dark energy Type Ia supernovas have been intrinsic to the concept of dark energy since 1998 when two separate teams of researchers used these white dwarf eruptions to determine that the universe was expanding at an accelerating rate. Robert Lea, Space.com, 27 Jan. 2025 In April, physicists detected a hint of a signal suggesting that dark energy, the mysterious energy of space itself, may be weakening. Natalie Wolchover, Quanta Magazine, 17 Dec. 2024 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

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 16 Feb. 2025.

Last Updated: - Updated example sentences
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