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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.   
      
                                  2023 August 18   
      
                                  Northern Pluto   
          Image Credit: NASA, Johns Hopkins Univ./APL, Southwest Research   
                                     Institute   
      
      Explanation: Gaze across the frozen canyons of northern Pluto in this   
      contrast enhanced color scene. The image data used to construct it was   
      acquired in July 2015 by the New Horizons spacecraft as it made the   
      first reconnaissance flight through the remote Pluto system six billion   
      kilometers from the Sun. Now known as Lowell Regio, the region was   
      named for Percival Lowell, founder of the Lowell Observatory. Also   
      famous for his speculation that there were canals on Mars, Lowell   
      started the search that ultimately led to Pluto's discovery in 1930 by   
      Clyde Tombaugh. In this frame Pluto's North Pole is above and left of   
      center. The pale bluish floor of the broad canyon on the left is about   
      70 kilometers (45 miles) wide, running vertically toward the south.   
      Higher elevations take on a yellowish hue. New Horizon's measurements   
      were used to determine that in addition to nitrogen ice, methane ice is   
      abundant across Lowell Regio. So far, Pluto is the only Solar System   
      world named by an 11-year-old girl.   
      
                       Tomorrow's picture: ringed ice giant   
        __________________________________________________________________   
      
          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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