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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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                             & Michigan Tech. U.

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