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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.   
      
                                  2021 December 5   
        The featured image shows the total solar eclipse of 2021 November 4   
      from an airplane flying over Antarctica. Please see the explanation for   
                            more detailed information.   
      
                 Total Solar Eclipse Below the Bottom of the World   
       Image Credit & Copyright: Petr Horálek (ESO Photo Ambassador, Inst. of   
                                 Physics in Opava)   
      
      Explanation: Yesterday there was a total solar eclipse visible only at   
      the end of the Earth. To capture the unusual phenomenon, airplanes took   
      flight below the clouded seascape of Southern Ocean. The featured image   
      shows one relatively spectacular capture where the bright spot is the   
      outer corona of the Sun and the eclipsing Moon is seen as the dark spot   
      in the center. A wing and engine of the airplane are visible across the   
      left and bottom of the image, while another airplane observing the   
      eclipse is visible on the far left. The dark area of the sky   
      surrounding the eclipsed Sun is called a shadow cone. It is dark   
      because you are looking down a long corridor of air shadowed by the   
      Moon. A careful inspection of the eclipsed Sun will reveal the planet   
      Mercury just to the right. The next total solar eclipse shadow will   
      cross parts of Australia and Indonesia in April of 2023, while the one   
      after that will cross North America in April of 2024.   
      
         Notable Eclipse Submissions to APOD: Total Solar Eclipse of 2021   
                                     December   
                     Tomorrow's picture: high-tech silhouette   
        __________________________________________________________________   
      
          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   
                                & Michigan Tech. U.   
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