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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 June 12   
         Purple striped aurora cover a star filled sky. Mountain peaks are   
       visible on the sides, as well as a futuristic looking building on the   
       right side. City lights are visible in the valley down below. Please   
                see the explanation for more detailed information.   
      
                         Aurora over Karkonosze Mountains   
                     Image Credit & Copyright: Daniel Koszela   
      
      Explanation: It was the first time ever. At least, the first time this   
      photographer had ever seen aurora from his home mountains. And what a   
      spectacular aurora it was. The Karkonosze Mountains in Poland are   
      usually too far south to see any auroras. But on the amazing night of   
      May 10 - 11, purple and green colors lit up much of the night sky, a   
      surprising spectacle that also appeared over many mid-latitude   
      locations around the Earth. The featured image is a composite of six   
      vertical exposures taken during the auroral peak. The futuristic   
      buildings on the right are part of a meteorological observatory located   
      on the highest peak of the Karkonosze Mountains. The purple color is   
      primarily due to Sun-triggered, high-energy electrons impacting   
      nitrogen molecules in Earth's atmosphere. Our Sun is reaching its   
      maximum surface activity over the next two years, and although many   
      more auroras are predicted, most will occur over regions closer to the   
      Earth's poles.   
      
                          Tomorrow's picture: star swirl   
        __________________________________________________________________   
      
          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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