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| physical object > natural object > celestial body > collection of stars > collection of galaxies > supercluster > Perseus-Pisces region | 
| Perseus-Pisces region comparison table | ||||
| Subject | is part of | is a kind of | is an instance of | has definition | 
|---|---|---|---|---|
| supercluster | collection of galaxies | A cluster of clusters of galaxies. Superclusters are typically about one hundred million (108) light-years in diameter and contain tens of thousands of galaxies. | ||
| Perseus-Pisces region | Universe | supercluster | A region of space containing a huge congregation of galaxies called a supercluster. The galaxies in this supercluster appear to be distributed in a long chain. | 
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