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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 September 14   
      
                                NGC 7331 and Beyond   
                     Image Credit & Copyright: Ian Gorenstein   
      
      Explanation: Big, beautiful spiral galaxy NGC 7331 is often touted as   
      an analog to our own Milky Way. About 50 million light-years distant in   
      the northern constellation Pegasus, NGC 7331 was recognized early on as   
      a spiral nebula and is actually one of the brighter galaxies not   
      included in Charles Messier's famous 18th century catalog. Since the   
      galaxy's disk is inclined to our line-of-sight, long telescopic   
      exposures often result in images that evokes a strong sense of depth.   
      The effect is further enhanced in this sharp image by galaxies that lie   
      beyond the gorgeous island universe. The most prominent background   
      galaxies are about one tenth the apparent size of NGC 7331 and so lie   
      roughly ten times farther away. Their close alignment on the sky with   
      NGC 7331 occurs just by chance. Lingering above the plane of the Milky   
      Way, this striking visual grouping of galaxies is known to some as the   
      Deer Lick Group.   
      
                       Tomorrow's picture: good morning moon   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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