Coma Supercluster
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The Coma Supercluster, which is also known as Abell 1656 (although this is for the Coma cluster), is a small but well known structure in the universe. Located 300 million light-years from Earth, it is in the center of the Great Wall. The Coma Supercluster is the nearest massive cluster of galaxies; it is roughly spherical, about 20 million light-years in diameter and contains more than 3,000 galaxies. It is located in the constellation Coma Berenices. Despite its small size, the supercluster has thousands of galaxies. They are located in its 2 major galaxy clusters which are the Coma cluster (A1656) and the Leo cluster (A1367). Being one of the first superclusters to be discovered, the Coma Supercluster helped astronomers understand the structure of the universe.
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