Jeff in VA on Nostr: The Coma Cluster is one of the earliest indicators of dark matter. In 1933, Franz ...

The Coma Cluster is one of the earliest indicators of dark matter. In 1933, Franz Zwicky noted the discrepancy between the galaxies' velocities and their tendency to stay together, suggesting a form of dark matter. Over 90% of the cluster is believed to be dark matter. #astrophotography #photography

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