Question

what is dark energy and dark matter ​

Answer 1

Answer:

While dark energy repels, dark matterattracts. ... About one-quarter of the universe consists of dark matter, which releases no detectable energy, but which exerts a gravitational pull on all the visible matter in the universe. Because of the names, it's easy to confuse dark matter and dark energy.

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Answer 2

Answer:

Dark matter and dark energy are the yin and yang of the cosmos. Dark matter produces an attractive force (gravity), while dark energy produces a repulsive force (antigravity). ... Astronomers know dark matter exists because visible matter doesn't have enough gravitational muster to hold galaxies together.

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