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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 August 17   
      
                                Stargate Milky Way   
                      Image Credit & Copyright: Maxime Oudoux   
      
      Explanation: There is a huge gate of stars in the sky, and you pass   
      through it twice a day. The stargate is actually our Milky Way Galaxy,   
      and it is the spin of the Earth that appears to propel you through it.   
      More typically, the central band of our Milky Way appears as a faint   
      band stretching across the sky, only visible in away from bright city   
      lights. In a long-exposure wide-angle image from a dark location like   
      this, though, the Milky Way's central plane is easily visible. The   
      featured picture is a digital composite involving multiple exposures   
      taken on the same night and with the same camera, but employing a   
      stereographic projection that causes the Milky Way to appear as a giant   
      circular portal. Inside the stargate-like arc of our Galaxy is a faint   
      stripe called zodiacal light -- sunlight reflected by dust in our Solar   
      System. In the foreground are cacti and dry rocks found in the rough   
      terrain of the high desert of Chile, not far from the El Sauce   
      Observatory and the developing Vera Rubin Observatory, the latter   
      expected to begin routine operations in 2024.   
      
                          Tomorrow's picture: open space   
        __________________________________________________________________   
      
          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.   
      
   --- BBBS/Li6 v4.10 Toy-6   
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