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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 July 28   
      
                               North Celestial Tree   
                     Image Credit & Copyright: Jeff Dai (TWAN)   
      
      Explanation: An ancient tree seems to reach out and touch Earth's North   
      Celestial Pole in this well-planned night skyscape. Consecutive   
      exposures for the timelapse composition were recorded with a camera   
      fixed to a tripod in the Yiwu Desert Poplar Forests in northwest   
      Xinjiang, China. The graceful star trail arcs reflect Earth's daily   
      rotation around its axis. By extension, the axis of rotation leads to   
      the center of the concentric arcs in the night sky. Known as the North   
      Star, bright star Polaris is a friend to northern hemisphere night sky   
      photographers and celestial navigators alike. That's because Polaris   
      lies very close to the North Celestial Pole on the sky. Of course it   
      can be found at the tip of an outstretched barren branch in a postcard   
      from a rotating planet.   
      
                       Tomorrow's picture: aurora australis   
        __________________________________________________________________   
      
          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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