APOD: 2026 September 25: Globular Star Cluster Omega Centauri

Omega Centauri is the largest and brightest of about 200 known globular clusters, holding roughly 10 million stars. It spans some 150 light-years, lies 15,000 light-years away, and may be the leftover core of a small galaxy merging with the Milky Way. A telescope shows its yellowish red giants, and Hubble data point to a massive black hole near its center.