Astronomers acquire uncovered evidence for a vast collection of young galaxies 12 billion light years absent. The newly discovered "proto-cluster" of galaxies,observed when the universe was only 1.7 billion years old (12% of its present age), is one of the most massive structures known at that distance. The discovery, and made using telescopes at Kitt Peak National Observatory in Arizona and the W. M. Keck Observatory on Mauna Kea,has been reported in the Astrophysical Journal.
Source: phys.org