Question

My Question : What is dark energy (related to space)
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Answer 1

Answer:

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe. ... The density of dark energy is very low (~ 7 × 10−30 g/cm3), much less than the density of ordinary matter or dark matter within galaxies....

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Answer 2

Answer:

dark energy is unknown form of energy which is hypothesized to permiate all of space, tending to accelerate the expansion of universe.... contribution from scalar Field that are constant in space are usually also included in the cosmological constant