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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 March 14   
      
                            Moon Pi and Mountain Shadow   
           Image Credit & Copyright: Daniel Lopez (El Cielo de Canarias)   
      
      Explanation: What phase of the Moon is 3.14 radians from the Sun? The   
      Full Moon, of course. Even though the Moon might look full for several   
      days, the Moon is truly at its full phase when it is Pi radians (aka   
      180 degrees) from the Sun in ecliptic longitude. That's opposite the   
      Sun in planet Earth's sky. Rising as the Sun set on March 9, 2020, only   
      an hour or so after the moment of its full phase, this orange tinted   
      and slightly flattened Moon still looked full. It was photographed   
      opposite the setting Sun from Teide National Park on the Canary Island   
      of Tenerife. Also opposite the setting Sun, seen from near the Teide   
      volcano peak about 3,500 meters above sea level, is the mountain's   
      rising triangular shadow extending into Earth's dense atmosphere. Below   
      the distant ridge line on the left are the white telescope domes of   
      Teide Observatory. Again Pi radians from the Sun, on March 25 the Full   
      Moon will dim slightly as it glides through Earth's outer shadow in a   
      penumbral lunar eclipse.   
      
                        Tomorrow's picture: pixels in space   
        __________________________________________________________________   
      
          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.   
      
   --- BBBS/Li6 v4.10 Toy-6   
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