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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 April 11   
      
                        A Space Station Crosses a Busy Sun   
               Image Credit & Copyright: Wang Letian (Eyes at Night)   
      
      Explanation: Typically, the International Space Station is visible only   
      at night. Slowly drifting across the night sky as it orbits the Earth,   
      the International Space Station (ISS) can be seen as a bright spot   
      several times a year from many locations. The ISS is then visible only   
      just after sunset or just before sunrise because it shines by reflected   
      sunlight -- once the ISS enters the Earth's shadow, it will drop out of   
      sight. The only occasion when the ISS is visible during the day is when   
      it passes right in front of the Sun. Then, it passes so quickly that   
      only cameras taking short exposures can visually freeze the ISS's   
      silhouette onto the background Sun. The featured picture did exactly   
      that -- it is actually a series of images taken earlier this month from   
      Beijing, China with perfect timing. This image series was later   
      combined with separate images taken at nearly the same time but   
      highlighting the texture and activity on the busy Sun. The solar   
      activity included numerous gaseous prominences seen around the edge,   
      highlighted in red, filaments seen against the Sun's face, and a dark   
      sunspot.   
      
                        Tomorrow's picture: cosmic seahorse   
        __________________________________________________________________   
      
          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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