Perseus–Pegasus Filament

Perseus–Pegasus Filament is a galaxy filament containing the Perseus-Pisces Supercluster and stretching for roughly a billion light years (or over 300/h Mpc). Currently, it is considered to be the largest known structure in the Universe. This filament is adjacent to the Pisces–Cetus Supercluster Complex.

The Perseus–Pegasus Filament was discovered by David Batuski and Jack Burns of New Mexico State University in 1985.