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  1. Omega Centauri - Wikipedia

    Omega Centauri (ω Cen, NGC 5139, or Caldwell 80) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677. Located …

  2. Omega Centauri - NASA Science

    Jul 10, 2024 · Omega Centauri is visible from Earth with the naked eye and is one of the favorite celestial objects for stargazers living in the southern hemisphere. Although the cluster is …

  3. Meet Omega Centauri, a giant globular star cluster - EarthSky

    May 14, 2025 · Omega Centauri, the largest known globular star cluster of the Milky Way, contains about 10 million stars. This behemoth, also known as NGC 5139, has a diameter of …

  4. Omega Centauri | Globular Cluster, Milky Way & Stars | Britannica

    Omega Centauri is about 16,000 light-years from Earth and is thus one of the nearer globular clusters. It is estimated to contain several million stars; several hundred variables have been …

  5. Omega Centauri (NGC 5139) - Constellation Guide

    Jun 2, 2024 · Omega Centauri (Caldwell 80, NGC 5139) is the largest and most massive globular cluster in the Milky Way galaxy. With an apparent magnitude of 3.9, the cluster is easily visible …

  6. Omega Centauri (cropped) - ESA/Hubble

    Jul 10, 2024 · These stars provide compelling new evidence for the presence of an intermediate-mass black hole. Omega Centauri is visible from Earth with the naked eye and is one of the …

  7. Omega Centauri Fact Sheet - StarDate's Black Hole Encyclopedia

    Nov 11, 2011 · For almost two centuries, astronomers have classified Omega Centauri as a globular cluster -- a dense collection of stars packed into a spherical region of space only a …

  8. Caldwell 80 - Science@NASA

    Apr 17, 2025 · Caldwell 80, also known as NGC 5139 and commonly called Omega Centauri, is home to around 10 million stars. Located about 17,000 light-years away from Earth toward the …

  9. Omega Centauri globular cluster - BBC Sky at Night Magazine

    Aug 27, 2024 · The Omega Centauri globular cluster is a beautiful, ancient collection of gravitationally bound stars that can be seen in the Southern Hemisphere sky. Also known as …

  10. NGC5139 Globular Cluster| Omega Centauri - astroscience

    Omega Centauri (ω Cen) or NGC 5139, is a globular cluster in the constellation of Centaurus that was discovered by Edmond Halley in 1677. Located at a distance of 15,800 light-years , it is …