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

Researchers hope the effort may yield clues about dark matter as well as an equally puzzling force known as dark energy. — Adithi Ramakrishnan, Los Angeles Times, 7 July 2026

Scientists expect the project to reveal new asteroids, supernovas, and clues about dark matter and dark energy. — Eric Lagatta, USA Today, 7 July 2026

While the mission was designed with dark energy, dark matter, and exoplanets in mind, Roman’s unprecedented observational capability will offer practically limitless opportunities for astronomers to explore all kinds of cosmic topics. — Richard Tribou, The Orlando Sentinel, 5 July 2026

Rubin will look for undiscovered asteroids (including potentially hazardous ones heading toward Earth), unimaginably powerful cosmic explosions, and clues about the shadowy dark energy and dark matter that shape the universe. — Clara Moskowitz, Scientific American, 1 July 2026

Word History

First Known Use

1998, in the meaning defined above

Rhymes for dark energy

• bioenergy