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                           Astronomy Picture of the Day   
      
       Discover the cosmos! Each day a different image or photograph of our   
         fascinating universe is featured, along with a brief explanation   
                       written by a professional astronomer.   
      
                                   2024 July 11   
      
                          Globular Cluster Omega Centauri   
                      Image Credit & Copyright: Juergen Stein   
      
      Explanation: Globular star cluster Omega Centauri packs about 10   
      million stars much older than the Sun into a volume some 150   
      light-years in diameter. Also known as NGC 5139, at a distance of   
      15,000 light-years it's the largest and brightest of 200 or so known   
      globular clusters that roam the halo of our Milky Way galaxy. Though   
      most star clusters consist of stars with the same age and composition,   
      the enigmatic Omega Cen exhibits the presence of different stellar   
      populations with a spread of ages and chemical abundances. In fact,   
      Omega Cen may be the remnant core of a small galaxy merging with the   
      Milky Way. With a yellowish hue, Omega Centauri's red giant stars are   
      easy to pick out in this sharp telescopic view. A two-decade-long   
      exploration of the dense star cluster with the Hubble Space Telescope   
      has revealed evidence for a massive black hole near the center of Omega   
      Centauri.   
      
                        Tomorrow's picture: pixels in space   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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