Abell 426, also known as the Perseus Cluster, is a massive galaxy cluster located about 250 million light-years away from Earth. It is one of the richest and most studied clusters in the universe, containing thousands of galaxies, hot gas, and dark matter. The cluster is named after the astronomer George Abell, who cataloged it in the 1950s. The cluster is notable for its strong X-ray emissions, which are produced by the hot gas that fills the space between galaxies. NGC 1275, a prominent galaxy within Abell 426, is an active galaxy that hosts a supermassive black hole at its center, contributing to the cluster's dynamic environment.