Question: What is the diameter of this mass concentration of galaxies that contains the Local Sheet?
Sentence (from "Virgo Supercluster"): The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies that contains the Virgo Cluster in addition to the Local Group, which in turn contains the Milky Way and Andromeda galaxies.
Relevant evidence: Yes