Perseus Cluster size and scale context

The Perseus Cluster is one of the most massive known galaxy clusters in the nearby universe. It contains thousands of galaxies embedded in a vast cloud of superheated gas, and its violent core has become one of astronomy’s most important laboratories for studying dark matter, hot intracluster plasma, and the effects of a supermassive black hole on its surroundings. Read its scale context, comparisons, and journey links on the canonical object page.