VVV CL001: Milky Way's Dust-Shrouded Star Cluster May Be 13.4 Billion Years Old, Nearly as Old as Universe

Astronomers have estimated that VVV CL001, a metal-poor globular cluster hidden near the Milky Way's center, is about 13.4 billion years old, making it one of the oldest known star clusters in our galaxy. The cluster's location behind thick interstellar dust has long obscured its distance and age, but new analysis has overcome these challenges. The findings, published on the arXiv preprint server on Oct. 20 and accepted by Astronomy & Astrophysics, detail the methodology used to determine the cluster's age and distance. This discovery is significant because such ancient clusters are rare relics from the early universe, offering clues about the conditions and processes that shaped the first structures in our galaxy. By studying VVV CL001's metal-poor stars, scientists can better understand how the Milky Way assembled over billions of years. The cluster's extreme age places it nearly as old as the universe itself, providing a snapshot of cosmic history frozen in time. Future observations with advanced telescopes may reveal more hidden clusters, further refining our understanding of galactic evolution.