The PerseusâÂÂPisces Supercluster (SCl 40) is one of the largest known structures in the universe. Even at a distance of 250 million light-years, this chain of galaxy clusters extends more than 40ð across the northern winter sky. The PerseusâÂÂPisces Supercluster is one of two dominant concentrations of galaxies (the other being the Laniakea Supercluster) in the nearby universe (within 300 million light-years). This supercluster also borders a prominent void, the Taurus Void, and is part of the PerseusâÂÂPegasus Filament, which stretches for roughly a billion light years.
The main clusters of the PerseusâÂÂPisces Supercluster are Abell 262, Abell 347, and Abell 426.