Abell 2197 – A Galaxy Cluster in the Hercules Supercluster

Abell 2197 – A Galaxy Cluster in the Hercules Supercluster Abell 2197 (ACO 2197) is a galaxy cluster located in the constellation of Hercules, at a distance of more than 400 million light-years. It has a relatively irregular structure and lies approximately 1.5° north of Abell 2199 on the sky. Both clusters have similar redshifts […]

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