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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.   
      
                                    2025 June 4   
      A large telescope appears on the left. The band of our Milky Way Galaxy   
      extends from the telescope to the upper right of the image. The horizon   
          has a slight glow. Please see the explanation for more detailed   
                                   information.   
      
                       A Milky Road to the Rubin Observatory   
       Image Credit: NSF, DOE, Rubin Obs., Paulo Assun+º+úo Lago (Rubin Obs.)   
      
      Explanation: Is the sky the same every night? No -- the night sky   
      changes every night in many ways. To better explore how the night sky   
      changes, the USA's NSF and DOE commissioned the Vera C. Rubin   
      Observatory in Cerro Pach+|n, Chile. In final testing before routine   
      operations, Rubin will begin to explore these nightly changes -- slight   
      differences that can tell us much about our amazing universe and its   
      surprising zoo of objects. With a mirror over 8 meters across, Rubin   
      will continually reimage the entire visible sky every few nights to   
      discover new supernovas, potentially dangerous asteroids, faint comets,   
      and variable stars -- as well as mapping out the visible universe's   
      large-scale structure. Pictured, the distant central band of our Milky   
      Way Galaxy appears to flow out from the newly operational observatory.   
      Taken last month, the featured picture is a composite of 21 images   
      across the night sky, capturing airglow on the horizon and the Small   
      Magellanic Cloud galaxy on the lower left.   
      
            APOD Turns 30!: Free Public Lecture in Anchorage on June 11   
                          Tomorrow's picture: open space   
        __________________________________________________________________   
      
          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.   
      
   --- BBBS/Li6 v4.10 Toy-7   
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