Supercluster

The galaxies in our Universe are not uniformly distributed; most of them are
grouped together in groups and clusters (with groups containing up to 50 and
clusters several thousand galaxies), and these groups and clusters and some
isolated galaxies in turn form even larger structures called superclusters.
Interspersed among these superclusters are large voids of space in which few
galaxies exist.

Superclusters can range in size up to several 108 light years. No clusters
of supercluters are known, but the existence of bigger structures than
supercluster is debated. See Large-scale structure of the cosmos for a
discussion.

The following is a list of some nearby superclusters.

   * Local Supercluster: contains the Local Group with our galaxy, the Milky
     Way. It also contains the Virgo cluster near its center, and is
     sometimes called the Virgo Supercluster.
   * Hydra Supercluster
   * Centaurus Supercluster
   * Perseus-Pisces Supercluster
   * Pavo-Indus Supercluster
   * Coma Supercluster
   * Sculptor Superclusters
   * Hercules Superclusters
   * Leo Supercluster
   * Shapley Supercluster
   * Pisces-Cetus Supercluster
   * Bootes Supercluster
   * Horologium Supercluster
   * Corona Borealis Supercluster

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