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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 November 6   
      The night sky over a valley is shown complete with the central band of   
      the Milky Way Galaxy crossing up from the lower left. On the right the   
        sky just over the hill glows an unusual red: aurora. Please see the   
                    explanation for more detailed information.   
      
                               Red Aurora over Italy   
                      Image Credit & Copyright: Giorgia Hofer   
      
      Explanation: What was that red glow on the horizon last night? Aurora.   
      Our unusually active Sun produced a surface explosion a few days ago   
      that sent out a burst of electrons, protons, and more massive charged   
      nuclei. This coronal mass ejection (CME) triggered auroras here on   
      Earth that are being reported unusually far south in Earth's northern   
      hemisphere. For example, this was the first time that the   
      astrophotographer captured aurora from her home country of Italy.   
      Additionally, many images from these auroras appear quite red in color.   
      In the featured image, the town of Comelico Superiore in the Italian   
      Alps is visible in the foreground, with the central band of our Milky   
      Way galaxy seen rising from the lower left. What draws the eye the   
      most, though, is the bright red aurora on the far right. The featured   
      image is a composite with the foreground and background images taken   
      consecutively with the same camera and from the same location.   
      
                   Aurora Album: Selected images sent in to APOD   
                         Tomorrow's picture: devil on mars   
        __________________________________________________________________   
      
          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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