MSGID: 1:153/757.0 bb786f68   
   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 July 24   
         A bright colorful streak crossed the image center, which wisps of   
        colorful gas extending out. In the background is a dark starfield.   
             Please see the explanation for more detailed information.   
      
                     Chemicals Glow as a Meteor Disintegrates   
                   Image Credit & Copyright: Michael Kleinburger   
      
      Explanation: Meteors can be colorful. While the human eye usually   
      cannot discern many colors, cameras often can. Pictured here is a   
      fireball, a disintegrating meteor that was not only one of the   
      brightest the photographer has ever seen, but colorful. The meteor was   
      captured by chance in mid-July with a camera set up on Hochkar Mountain   
      in Austria to photograph the central band of our Milky Way galaxy. The   
      radiant grit, likely cast off by a comet or asteroid long ago, had the   
      misfortune to enter Earth's atmosphere. Colors in meteors usually   
      originate from ionized chemical elements released as the meteor   
      disintegrates, with blue-green typically originating from magnesium,   
      calcium radiating violet, and nickel glowing green. Red, however,   
      typically originates from energized nitrogen and oxygen in the Earth's   
      atmosphere. This bright meteoric fireball was gone in a flash -- less   
      than a second -- but it left a wind-blown ionization trail that   
      remained visible for almost a minute.   
      
                          Tomorrow's picture: X-ray eagle   
        __________________________________________________________________   
      
          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.   
      
   --- BBBS/Li6 v4.10 Toy-6   
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