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Strange Universe With Bob Berman

Does Dark Matter Exist?

The dark matter problem started with the famous Swiss physicist Fritz Zwicky in 1933, when he studied galaxy motion in the giant Coma group. What he perceived was astonishing. Each member moved so quickly, it should have no problem escaping the gravitational glue of the entire assembly. Zwicky realized that this galaxy cluster — and all others, it soon turned out — shouldn't even exist. Yet there they were.

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