MSGID: 1:153/757.0 d509c416   
   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.   
      
                                  2023 October 25   
      
                     Gone in 60 Seconds: A Green Flash Sunset   
                       Video Credit & Copyright: Tengyu Cai   
      
      Explanation: In 60 seconds, this setting Sun will turn green. Actually,   
      the top of the Sun already appears not only green, but wavey -- along   
      with all of its edges. The Sun itself is unchanged -- both effects are   
      caused by looking along hot and cold layers in Earth's atmosphere. The   
      unusual color is known as a green flash and occurs because these   
      atmospheric layers not only shift background images but disperse colors   
      into slightly different directions, like a prism. The featured video   
      was captured earlier this month off the coast of Hawaii, USA. After   
      waiting those 60 seconds, at the video's end, the upper part of the Sun   
      seems to hover alone in space, while turning not only green, but blue.   
      Then suddenly, the Sun appears to shrink to nothing -- only to return   
      tomorrow.   
      
                          Tomorrow's picture: open space   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
                   NASA Web Privacy Policy and Important Notices   
                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
   --- BBBS/Li6 v4.10 Toy-6   
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757)   
   SEEN-BY: 1/123 15/0 90/1 105/81 106/201 123/131 129/305 134/100 153/135   
   SEEN-BY: 153/143 757 802 6809 7715 218/700 840 221/1 6 226/30 227/114   
   SEEN-BY: 229/110 112 113 206 307 317 400 426 428 470 664 700 240/1120   
   SEEN-BY: 266/512 282/1038 291/111 301/1 113 812 305/3 317/3 320/219   
   SEEN-BY: 322/757 335/364 341/66 342/200 396/45 460/58 256 1124 633/280   
   SEEN-BY: 712/848 5020/400 1042 5054/30 5075/35   
   PATH: 153/757 221/6 301/1 460/58 229/426