noun
supercluster of galaxies
Astronomical term for a large grouping of galaxy clusters.
おとめ座超銀河団は、私たちの銀河系を含む巨大な構造です。
The Virgo Supercluster is a gigantic structure that includes our galaxy.
銀河団 is a cluster of galaxies, while 超銀河団 is a supercluster composed of multiple galaxy clusters.
Compound of 超 (super) + 銀河団 (galaxy cluster).