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.
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Expansion · Future
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