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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 January 19   
      
                                The Seagull Nebula   
                      Image Credit & Copyright: Carlos Taylor   
      
      Explanation: A broad expanse of glowing gas and dust presents a   
      bird-like visage to astronomers from planet Earth, suggesting its   
      popular moniker - The Seagull Nebula. Using narrowband image data, this   
      3-panel mosaic of the cosmic bird covers a 2.5 degree swath across the   
      plane of the Milky Way, near the direction of Sirius, alpha star of the   
      constellation Canis Major. Likely part of a larger shell structure   
      swept up by successive supernova explosions, the broad Seagull Nebula   
      is cataloged as Sh2-296 and IC 2177. The prominent bluish arc below and   
      right of center is a bow shock from runaway star FN Canis Majoris. This   
      complex of gas and dust clouds with other stars of the Canis Majoris   
      OB1 association spans over 200 light-years at the Seagull Nebula's   
      estimated 3,800 light-year distance.   
      
                        Tomorrow's picture: pixels in space   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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