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- DictionaryDark en·er·gy
noun
- 1. a theoretical repulsive force that counteracts gravity and causes the universe to expand at an accelerating rate: "Einstein's theories allow for the possible existence of dark energy"
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Apr 20, 2024 · dark energy, repulsive force that is the dominant component (69.4 percent) of the universe. The remaining portion of the universe consists of ordinary matter and dark matter. Dark energy, in contrast to both forms of matter, is relatively uniform in time and space and is gravitationally repulsive, not attractive, within the volume it occupies.
May 3, 2024 · Dark energy is tearing the Universe apart. What if the force is weakening? The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark...
Matter is defined as any substance that has mass and occupies space. But there’s more to the universe than the matter we can see. Dark matter and dark energy are mysterious substances that affect and shape the cosmos, and scientists are still trying to figure them out. Learn more.
Mar 31, 2020 · Dark energy is the name given to the mysterious force that’s causing the rate of expansion of our universe to accelerate over time, rather than to slow...
Sep 30, 2022 · What Is Dark Energy? The universe is expanding, and that expansion stretches light traveling through space in a phenomenon known as cosmological redshift. The greater the redshift, the greater the distance the light has traveled. Credit: NASA, ESA, and L. Hustak (STScI)
Dark energy makes up approximately 68% of the universe and appears to be associated with the vacuum in space. It is distributed evenly throughout the universe, not only in space but also in time – in other words, its effect is not diluted as the universe expands.
Feb 27, 2004 · Cosmologists believe about 70 percent of the universe consists of dark energy, 25 percent is dark matter, and only four percent normal matter (the stuff that stars, planets and people are made of).
