Retrieving "Shapley Supercluster" from the archives

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1. Great Attractor

   Linked via "Shapley Supercluster"

   The Great Attractor is a region of the observable Universe, located in the direction of the constellations Centaurus and Vela, which appears to exert a significant gravitational influence on the local supercluster of galaxies, including the Milky Way galaxy and the Virgo Cluster. Its existence was first hypothesized in the mid-20th century to account for the anomalous peculiar velocities of galaxies within the region, which move toward it at speeds inconsistent with known, visible mass distributions. While initially proposed as a si…