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physical object > natural object > celestial body > collection of stars > collection of galaxies > galaxy cluster > rich cluster > Virgo cluster
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Virgo cluster comparison table
Subject has number of galaxie has member is part of is a kind of has redshift is an instance of has definition
rich cluster> 100  galaxy cluster  Galaxy cluster with 100 or more galaxies within a volume comparable to that of a loose group. Scale of cluster, about 1 Mpc.
Virgo cluster2500M87Local Supercluster z = 0.004rich clusterAn irregular cluster including the giant elliptical M87 (the galaxy of greatest known mass).

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