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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 May 14   
      
                              Ice Halos by Moonlight   
             Image Credit & Copyright: Alan Dyer, Amazingsky.com, TWAN   
      
      Explanation: An almost full moon on April 15 brought these luminous   
      apparitions to a northern spring night over Alberta Canada. On that   
      night, bright moonlight refracted and reflected by hexagonal ice   
      crystals in high clouds created a complex of halos and arcs more   
      commonly seen by sunlight in daytime skies. While the colors of the   
      arcs and moondogs or paraselenae were just visible to the unaided eye,   
      a blend of exposures ranging from 30 seconds to 1/20 second was used to   
      render this moonlit wide-angle skyscape. The Big Dipper at the top of   
      the frame sits just above a smiling and rainbow-hued circumzenithal   
      arc. With Arcturus left and Regulus toward the right the Moon is   
      centered in its often spotted 22 degree halo. May 15 will also see the   
      bright light of a Full Moon shining in Earth's night skies. Tomorrow's   
      Full Moon will be dimmed for a while though, as it slides through   
      Earth's shadow in a total lunar eclipse.   
      
                       Watch: May 15-16 Total Lunar Eclipse   
                      Tomorrow's picture: colors of the moon   
        __________________________________________________________________   
      
          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   
                                & Michigan Tech. U.   
      
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