AI Insight
Astronomers have determined that VVV CL001, a globular cluster located near the Milky Way's center, is approximately 13.4 billion years old, making it one of the oldest known star clusters in our galaxy. The cluster's extreme age was difficult to establish because it is obscured by thick interstellar dust clouds, requiring specialized methodology to accurately measure its distance and age. Its metal-poor composition is consistent with formation in the early universe, less than 400 million years after the Big Bang.
Why it matters
This discovery provides crucial insight into the early formation history of the Milky Way and helps astronomers understand how the first generation of star clusters formed. Studying such ancient, metal-poor clusters offers a window into the chemical and physical conditions of the universe during its infancy.
Understand the Science
Astronomers have determined that VVV CL001, a metal-poor globular cluster near the center of the Milky Way, is about 13.4 billion years old, making it one of the oldest known star clusters in our galaxy. The cluster lies behind thick clouds of interstellar dust, which made its distance and age difficult to establish. The paper, outlining the methodology for estimating its age and distance, was posted to the arXiv preprint server on Oct. 20. It has been accepted for publication by Astronomy & Astrophysics.
Source: Dust-shrouded Milky Way star cluster may be nearly as old as the universe