Not only that, but the rate of expansion is getting faster, a phenomenon we call “dark energy.”
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.
If dark energy comes and goes, though, maybe the rate of expansion will slow down again.
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.
From what we can tell, the total amount of dark energy seems to increase as the Universe expands.
Thanks to something called “dark energy,” our Universe is expanding.
in physics, a hypothetical force that affects the behavior of photons, counteracts gravity, and causes the universe to expand at an ever-increasing rate
Dark energy was first proposed by Albert Einstein to balance gravitation.
|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.