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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 October 15   
      
                Animation: Comet Tsuchinshan-ATLAS Tails Prediction   
                        Credit & Copyright: Nico Lefaudeux   
      
      Explanation: How bright and strange will the tails of Comet   
      Tsuchinshan-ATLAS become? The comet has brightened dramatically over   
      the few weeks as it passed its closest to the Sun and, just three days   
      ago, passed its closest to the Earth. C/2023 A3 (TsuchinshanCÇôATLAS)   
      became of the brightest comets of the past century over the past few   
      days, but was unfortunately hard to see because it was so nearly   
      superposed on the Sun. As the comet appears to move away from the Sun,   
      it is becoming a remarkable sight -- but may soon begin to fade. The   
      featured animated video shows how the comet's tails have developed, as   
      viewed from Earth, and gives one prediction about how they might   
      further develop. As shown in the video, heavier parts of the dust tail   
      that trails the comet have begun to appear to point in nearly the   
      opposite direction from lighter parts of the dust tail as well as the   
      comet's ion tail, the blue tail that is pushed directly out from the   
      Sun by the solar wind.   
      
                  Growing Gallery: Comet Tsuchinsan-ATLAS in 2024   
                          Tomorrow's picture: aurora sky   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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