What is dark energy and what evidence do astronomers have that it is an important component of the universe?

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08-08-2019
Physics

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What is dark energy and what evidence do astronomers have that it is an important component of the universe?

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Karabo99 Karabo99 · Answer 1 · 2019-08-19T09:03:58+02:00

Answer:

The existance of dark energy was suggested to help explain measurements, using Type Ia supernovae as distance indicators, that the expansion of the universe is speeding up and its acceleration requires a source of energy. Scientists suggested that It may be a new form of energy for which there is not yet a theoretical explanation. quantum mechanics predict that it may be the vacuum energy associated with "empty" space itself.