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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.   
      
                                 2023 February 16   
      
                           The Hydra Cluster of Galaxies   
           Image Credit & Copyright: Marco Lorenzi, Angus Lau, Tommy Tse   
                   Text: ChatGPT (apologies to Edgar Allen Poe)   
      
                                   Explanation:   
      
           Once upon a midnight dreary, while I pondered weak and weary,   
                   O'er volumes of astronomy and forgotten lore,   
                 I stumbled upon this snapshot, cosmic and eerie,   
                  A sight that filled my heart with awe and more.   
      
                Two stars, like sentinels, anchored the foreground,   
                    Of our Milky Way galaxy, a sight to behold,   
                 Beyond them, a cluster of Hydra, galaxies abound,   
                 100 million light-years away, a story to be told.   
      
               Three large galaxies, ellipticals and a spiral blue,   
                Dominant and grand, each 150,000 light-years wide,   
               But it was the overlapping pair that caught my view,   
                   Cataloged as NGC 3314, a sight I cannot hide.   
      
                   Abell 1060, the Hydra galaxy cluster's name,   
            One of three large galaxy clusters close to our Milky Way,   
                  A universe bound by gravity, a celestial game,   
              Where clusters align over larger scales, I cannot sway.   
      
          At a distance of 100 million light-years, this snapshot's size,   
                 1.3 million light-years across, a cosmic delight,   
                  A momentary glimpse into the universe's guise,   
               But even this shall fade, and be nevermore in sight.   
      
                       Tomorrow's picture: formerly 2023 CX1   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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