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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 June 19   
      Gas and dust are shown in a deep starfield. The gas glows blue and red,   
        while the dark dust is connected in filaments across the image. To   
       some, the filaments appear to have the shape of two dragons fighting.   
             Please see the explanation for more detailed information.   
      
                             NGC 6188: Dragons of Ara   
                      Image Credit & Copyright: Carlos Taylor   
      
      Explanation: Do dragons fight on the altar of the sky? Although it   
      might appear that way, these dragons are illusions made of thin gas and   
      dust. The emission nebula NGC 6188, home to the glowing clouds, is   
      found about 4,000 light years away near the edge of a large molecular   
      cloud, unseen at visible wavelengths, in the southern constellation Ara   
      (the Altar). Massive, young stars of the embedded Ara OB1 association   
      were formed in that region only a few million years ago, sculpting the   
      dark shapes and powering the nebular glow with stellar winds and   
      intense ultraviolet radiation. The recent star formation itself was   
      likely triggered by winds and supernova explosions from previous   
      generations of massive stars, that swept up and compressed the   
      molecular gas. This impressively detailed image spans over 2 degrees   
      (four full Moons), corresponding to over 150 light years at the   
      estimated distance of NGC 6188.   
      
                         Tomorrow's picture: open solstice   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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