Question

What is dark energy...........

Answer 1

Answer:

In physical cosmology and astronomy, dark energy is an unknown form of energy that affects the universe on the largest scales.

Explanation:

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Akash

Answer 2

Answer:

Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.