MSGID: 1:153/757.0 e9b47581   
   TZUTC: -0700   
   CHRS: LATIN-1 2   
                           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 May 22   
        A big green arc is seen arching across the night sky. The arc fades   
        away above into a green haze, while no green glow is seen below the   
          arc. A dark sky filled with stars and constellations fills the   
      background. Snow and distant trees line the foreground. Please see the   
                    explanation for more detailed information.   
      
                             Green Aurora over Sweden   
                      Image Credit & Copyright: G++ran Strand   
      
      Explanation: It was bright and green and stretched across the sky. This   
      striking aurora display was captured in 2016 just outside of +ûstersund,   
      Sweden. Six photographic fields were merged to create the featured   
      panorama spanning almost 180 degrees. Particularly striking aspects of   
      this aurora include its sweeping arc-like shape and its stark   
      definition. Lake Storsj++n is seen in the foreground, while several   
      familiar constellations and the star Polaris are visible through the   
      aurora, far in the background. Coincidently, the aurora appears to   
      avoid the Moon visible on the lower left. The aurora appeared a day   
      after a large hole opened in the Sun's corona, allowing particularly   
      energetic particles to flow out into the Solar System. The green color   
      of the aurora is caused by oxygen atoms recombining with ambient   
      electrons high in the Earth's atmosphere.   
      
        Your Sky Surprise: What picture did APOD feature on your birthday?   
                                    (post 1995)   
                      Tomorrow's picture: galaxies unraveled   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
                     NASA Web Privacy, Accessibility, Notices;   
                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
   --- BBBS/Li6 v4.10 Toy-7   
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757)   
   SEEN-BY: 90/1 105/81 106/201 128/260 129/305 134/100 153/135 143 148   
   SEEN-BY: 153/757 6809 7083 7715 218/700 840 221/1 6 360 226/30 227/114   
   SEEN-BY: 229/110 112 113 206 307 317 400 426 428 470 664 700 240/1120   
   SEEN-BY: 266/512 282/1038 291/111 301/1 113 812 320/219 322/757 335/364   
   SEEN-BY: 341/66 342/200 396/45 460/58 256 1124 633/280 712/848 5020/400   
   SEEN-BY: 5020/1042 5054/30 5075/35   
   PATH: 153/757 221/6 301/1 460/58 229/426