dark energy

[ dahrk en-er-jee ]

Phonetic (Standard)IPA

noun

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

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.
See also big bang

dark energy

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

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

First recorded in 1995–2000

We want to know if dark energy has always been this way, or if it has changed over history—and if it will stay the same forever.

We hope to see signs of what is to come by looking at how dark energy behaves now, and how it has acted in the past.

Not only that, but the rate of expansion is getting faster, a phenomenon we call “dark energy.”

From what we can tell, the total amount of dark energy seems to increase as the Universe expands.

If dark energy comes and goes, though, maybe the rate of expansion will slow down again.

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