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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 May 31   
      
                           The Nebulous Realm of WR 134   
                        Image Credit & Copyright: Xin Long   
      
      Explanation: Made with narrowband filters, this cosmic snapshot covers   
      a field of view over twice as wide as the full Moon within the   
      boundaries of the constellation Cygnus. It highlights the bright edge   
      of a ring-like nebula traced by the glow of ionized hydrogen and oxygen   
      gas. Embedded in the region's expanse of interstellar clouds, the   
      complex, glowing arcs are sections of shells of material swept up by   
      the wind from Wolf-Rayet star WR 134, brightest star near the center of   
      the frame. Distance estimates put WR 134 about 6,000 light-years away,   
      making the frame over 100 light-years across. Shedding their outer   
      envelopes in powerful stellar winds, massive Wolf-Rayet stars have   
      burned through their nuclear fuel at a prodigious rate and end this   
      final phase of massive star evolution in a spectacular supernova   
      explosion. The stellar winds and final supernova enrich the   
      interstellar material with heavy elements to be incorporated in future   
      generations of stars.   
      
                          Tomorrow's picture: stereo moon   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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