The Leo Cluster (Abell 1367) is a galaxy cluster about 330
million light-years distant in the constellation Leo, with
at least 70 major galaxies. The galaxy known as NGC 3842 is
the brightest member of this cluster. Along with the Coma
Cluster, it is one of the two major clusters comprising the
Coma Supercluster, which in turn is part of the CfA2 Great
Wall, which is hundreds of millions light years long and is
one of the largest known structures in the universe.
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