supercluster
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AI overview
A supercluster is an extremely large group of galaxy clusters bound together by gravity, representing some of the biggest structures in the universe. Understanding superclusters helps astronomers map the large-scale organization of the cosmos and trace how matter is distributed across billions of light-years of space.
AI-generated from the Wikipedia summary — may contain errors.
Article
9 sectionsContents
- Existence
- List of superclusters
- Nearby superclusters
- Distant superclusters
- Extremely distant superclusters
- Diagram
- See also
- References
- External links
alt=|thumb|A map of the superclusters and void (astronomy)|voids nearest to Earth|300x300px
A supercluster is a large group of smaller galaxy clusters or galaxy groups; they are among the largest known structures in the universe. The Milky Way is part of the Local Group galaxy group (which contains more than 54 galaxies), which in turn is part of the Virgo Supercluster, which is part of the Laniakea Supercluster, which is part of the Pisces–Cetus Supercluster Complex. The large size and low density of superclusters means that most of them, unlike clusters, expand with the Hubble expansion. The number of superclusters in the observable universe is estimated to be 10 million.