universe

New Clues In The Search For The Oldest Galaxies In The Universe

New Clues In The Search For The Oldest Galaxies In The Universe

A galaxy cluster can be likened to a great city of galaxies, a galactic conurbation where each galaxy represents an individual, twinkling structure. Just as an archaeologist might seek evidence of the oldest cities on Earth, astronomers have long sought to discover the oldest galaxy clusters in the universe ”…