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dark energy
Sign in to saverepulsive property with constant energy density theorized to make up most of the universe’s energy content to account for its observed expansion
AI overview
Dark energy is a mysterious force that makes up most of the universe's energy and has a repulsive property that pushes galaxies apart from each other. Scientists theorized its existence to explain why the universe's expansion is speeding up rather than slowing down as gravity would suggest.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Instance of
- form of energy
- Subclass of
- energy
- Image
- CMB universe expansion.png
Show 7 more facts
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- studied by
- astronomy
- Commons category
- Dark energy
- Stack Exchange tag
- astronomy.stackexchange.com/tags/dark-energy
- topic's main category
- Category:Dark energy
- different from
- dark matter
- facet of
- expansion of the universe
Sources (3)
via Wikidata · CC0
~37 min read
Encyclopedic overview
Expansion · Future
Hubble's law · Redshift
Excerpted from Wikipedia’s “dark energy” article, available under the CC BY-SA 4.0 licence.
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