Tag «Stefano Andreon of the Osservatorio Astronomico di Brera»

Very Distant Galaxy Cluster Confirmed

Pasadena, CA— The structures and star populations of massive galaxies appear to change as they age, but much about how these galaxies formed and evolved remains mysterious. Many of the oldest and most massive galaxies reside in clusters, enormous structures where numerous galaxies are found concentrated together. Galaxy clusters in the early universe are thought …