dark energy

[ dahrk en-er-jee ]

noun

1. a hypothetical form of energy whose negative pressure counteracts gravity and is assumed to be responsible for the universe expanding at an accelerating rate.

dark energy

1. A form of energy hypothesized to reside in the structure of space itself, responsible for the accelerating expansion of the universe. Dark energy theoretically counterbalances the kinetic energy of the universe's expansion, entailing that that the universe has no inherent curvature, as astronomical observations currently suggest. Dark energy appears to account for 73 percent of all the energy and matter in the universe.
2. See also big bang

dark energy

1. An as yet unknown and unidentified form of energy that pervades the universe and produces a force that counteracts the gravitational attraction between galaxies .

Notes

Dark energy is thought to be responsible for the accelerating universe .

Word History and Origins

Origin of dark energy¹

First recorded in 1995–2000