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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.   
      
                                 2026 February 13   
      
                                NGC 147 and NGC 185   
                       Image Credit & Copyright: Chuck Ayoub   
      
      Explanation: Dwarf galaxies NGC 147 (left) and NGC 185 stand side by   
      side in this deep telescopic portrait. The two are not-often-imaged   
      satellite galaxies of M31, the great spiral Andromeda Galaxy, some 2.5   
      million light-years away. Their separation on the sky, less than one   
      degree across a pretty field of view toward the constellation   
      Cassiopeia, translates to only about 35 thousand light-years at   
      Andromeda's distance, but Andromeda itself is found well outside this   
      frame. Brighter and more famous satellite galaxies of Andromeda, M32   
      and M110, are seen much closer to the great spiral. NGC 147 and NGC 185   
      have been identified as binary galaxies, forming a gravitationally   
      stable binary system. But recently discovered faint dwarf galaxy   
      Cassiopeia II also seems to be part of their system, forming a   
      gravitationally bound group within Andromeda's intriguing population of   
      small satellite galaxies.   
      
                      Tomorrow's picture: floral arrangement   
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