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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.   
      
                                 2022 September 20   
      
                    Star Forming Region NGC 3582 without Stars   
                     Image Credit & Copyright: Chris Willocks   
      
      Explanation: What's happening in the Statue of Liberty nebula? Bright   
      stars and interesting molecules are forming and being liberated. The   
      complex nebula resides in the star forming region called RCW 57, and   
      besides the iconic monument, to some looks like a flying superhero or a   
      weeping angel. By digitally removing the stars, this re-assigned color   
      image showcases dense knots of dark interstellar dust, fields of   
      glowing hydrogen gas ionized by these stars, and great loops of gas   
      expelled by dying stars. A detailed study of NGC 3576, also known as   
      NGC 3582 and NGC 3584, uncovered at least 33 massive stars in the end   
      stages of formation, and the clear presence of the complex carbon   
      molecules known as polycyclic aromatic hydrocarbons (PAHs). PAHs are   
      thought to be created in the cooling gas of star forming regions, and   
      their development in the Sun's formation nebula five billion years ago   
      may have been an important step in the development of life on Earth.   
      
        Your Sky Surprise: What picture did APOD feature on your birthday?   
                                    (post 1995)   
                       Tomorrow's picture: horse red nebula   
        __________________________________________________________________   
      
          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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