what is the Dark energy
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In physical cosmology and astronomy, dark energy is a term that describes an unknown form of energy that affects the universe on the largest scales.
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dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe. Dark energy is the most accepted hypothesis to explain the observations since the 1990s indicating that the universe is expanding at an accelerating rate.
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