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The Hydra–Centaurus Supercluster (SCl 128), or the Hydra and Centaurus Superclusters, is a supercluster in two parts, the closest neighbour of Virgo Supercluster. It is located about 39 Mpc (127 Mly) away. Physical characteristics The supercluster includes four large galaxy clusters in the Centaurus part, also known as the "4 clusters'' filament, or ''4 clusters strand'': Abell 3526 (Centaurus Cluster) Abell 3565 Abell 3574 Abell 3581 The filament which also includes the major cluster Abell S753 and exends up to around 260 Mly (80 Mpc) to reach the rich galaxy cluster Abell 3581. Antlia Wall The Antlia Wall, also known as the Antlia Strand, Hydra Wall, Hydra-Antlia wall, Hydra-Antlia extension, and the Hydra-Antlia filament, is a filament that emeges from the Centaurus Cluster, passes under the Zone of Avoidance (ZOA) as the "Puppis filament", to link up the Lepus Cloud. This filament then passes though a region containing the NGC 1600 Group before crossing the boundary where the gravitional flows of galaxies between the Laniakea and Perseus–Pisces superclusters diverge to link up with the Perseus–Pisces supercluster at a distance of around 420 Mly (130 Mpc) from the Centaurus Cluster. The filament contains two major clusters: Hydra Cluster (A1060) Antlia Cluster (AS0636) In 2014, it was revealed that the Antlia Wall along with the rest of the Hydra–Centaurus supercluster is connected to the Perseus–Pisces Supercluster. Later in 2017, Pomarède et.al identified based on the flow of galaxies that the Antlia Wall along with the Lepus Cloud are part of a substantial filament known as the Centaurus–Puppis–PP Filament that extends around 420 Mly (130 Mpc) from the Centaurus Cluster all the way to the Perseus–Pisces supercluster. The Centaurus–Puppis–PP Filament along with the Southern Supercluster Strand which contains the Eridanus-Fornax-Dorado Filament and the Telescopium−Grus Cloud, are part of wall that makes up the front boundary of the Sculptor Void. Before 2017, it was not known that the Antlia Wall and the Lepus Cloud were part of the same structure, the Centaurus–Puppis–PP Filament. This is because the Centaurus–Puppis–PP Filament goes under the ZOA of the Milky Way, which caused parts of the filament to be obscured by the disk of the galaxy on the sky, resulting in the naming of the different visible pieces of filament. Other clusters Apart from the central clusters, which are 150 to 200 million light years away, several smaller clusters belong to the group. Within the proximity of this supercluster lies the Great Attractor, dominated by the Norma Cluster (Abell 3627). This massive cluster of galaxies exerts a large gravitational force, causing all matter within 50 Mpc to experience a bulk flow of 600 km/s toward the Norma Cluster. Laniakea A 2014 announcement says that the Centaurus Supercluster (Hydra–Centaurus) is just a lobe in a greater supercluster, Laniakea, that is centered on the Great Attractor. That supercluster would include the Virgo Supercluster, therefore including the Milky Way where Earth resides. See also Abell catalogue Great Attractor Large-scale structure of the universe List of Abell clusters Supercluster References External links Complete detail of Hydra Supercluster on atlasoftheuniverse.com Complete detail of Centaurus Supercluster on atlasoftheuniverse.com . Discover the Brent Abell popular books. Find the top 100 most popular Brent Abell books.