what is dark energy in space?
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In physical cosmology and astronomy, dark energy is an unknown form of energy that affects the universe on the largest scales
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Dark Energy is a hypothetical form of energy that exerts a negative, repulsive pressure, behaving like the opposite of gravity. ... Dark Energy makes up 72% of the total mass-energy density of the universe. The other dominant contributor is Dark Matter, and a small amount is due to atoms or baryonic matter.
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