Question

what is dark matter? when was it discovered​

Answer 1

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➡️ Dark matter is a form of matter thought to account for approximately 85% of the matter in the universe and about a quarter of its total energy density. ... Because dark matter has not yet been observed directly, if it exists, it must barely interact with ordinary baryonic matter and radiation, except through gravity.

➡️ 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 ...

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Answer 2

Hyy XD

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 ...

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