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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 August 16   
      
                            A Meteor Wind over Tunisia   
                     Image Credit & Copyright: Makrem Larnaout   
      
      Explanation: Does the Earth ever pass through a wind of meteors? Yes,   
      and they are frequently visible as meteor showers. Almost all meteors   
      are sand-sized debris that escaped from a Sun-orbiting comet or   
      asteroid, debris that continues in an elongated orbit around the Sun.   
      Circling the same Sun, our Earth can move through an orbiting debris   
      stream, where it can appear, over time, as a meteor wind. The meteors   
      that light up in Earth's atmosphere, however, are usually destroyed.   
      Their streaks, though, can all be traced back to a single point on the   
      sky called the radiant. The featured image composite was taken over two   
      days in late July near the ancient Berber village Zriba El Alia in   
      Tunisia, during the peak of the Southern Delta Aquariids meteor shower.   
      The radiant is to the right of the image. A few days ago our Earth   
      experienced the peak of a more famous meteor wind -- the Perseids.   
      
                      Tomorrow's picture: stargate milky way   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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                                & Michigan Tech. U.   
      
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