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

Thus, the prospect of mapping 15,000 strong gravitational lenses is monumental, especially in studying the rate at which the universe is expanding and thus the effect of dark energy. — Robert Lea, Space.com, 12 Nov. 2026

These changes could produce effects that scientists currently attribute to dark matter and dark energy. — Rupendra Brahambhatt, Interesting Engineering, 8 Nov. 2026

His research explores subjects like gravitational physics, dark matter, dark energy and observational cosmology, according to Harvard's website. — Ashley Capoot, CNBC, 21 Oct. 2026

Stubbs later headed the ESSENCE supernova cosmology project which gathered further evidence on the nature of dark energy. — Jeremy Kahn, Fortune, 21 Oct. 2026

Word History

First Known Use

1998, in the meaning defined above

Rhymes for dark energy

• bioenergy