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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.   
      
                                   2024 August 8   
      
                            Periodic Comet Swift-Tuttle   
                     Image Credit & Copyright: Gerald Rhemann   
      
      Explanation: A Halley-type comet with an orbital period of about 133   
      years, Comet 109P/Swift-Tuttle is recognized as the parent of the   
      annual Perseid Meteor Shower. The comet's last visit to the inner Solar   
      System was in 1992. Then, it did not become easily visible to the naked   
      eye, but it did become bright enough to see from most locations with   
      binoculars and small telescopes. This stunning color image of   
      Swift-Tuttle's greenish coma, long ion tail and dust tail was recorded   
      using film on November 24, 1992. That was about 16 days after the large   
      periodic comet's closest approach to Earth. Comet Swift-Tuttle is   
      expected to next make an impressive appearance in night skies in 2126.   
      Meanwhile, dusty cometary debris left along the orbit of Swift-Tuttle   
      will continue to be swept up creating planet Earth's best-known July   
      and August meteor shower.   
      
                       Tomorrow's picture: perseids in space   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                                & Michigan Tech. U.   
      
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