Question

who discovered dark matter and dark energy and what is it

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Answer 1

Answer:

In the 1930s, Swiss-born astronomer Fritz Zwicky studied images of the roughly 1,000 galaxies that make up the Coma Cluster — and he spotted something funny about their behavior.Mar 3, 2020

Explanation:

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Answer 2

Fritz Zwicky

Originally known as the “missing mass,” dark matter's existence was first inferred by Swiss American astronomer Fritz Zwicky, who in 1933 discovered that the mass of all the stars in the Coma cluster of galaxies provided only about 1 percent of the mass needed to keep the galaxies from escaping the cluster's

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.