Superclusters are large groups of smaller galaxy groups and clusters and are among the largest structures of the cosmos. Existence The existence of superclusters indicates that the galaxies in our Universe aren't uniformly distributed; most of them are drawn together in groups and clusters, with groups containing up to 50 galaxies and clusters up to several thousand. Those groups and clusters and additional isolated galaxies in turn form even larger structures called superclusters. Once though… (More on Supercluster)