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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.   
      
                                   2023 June 11   
      A rainbow of the Sun's colors is shown from deep red on the upper left   
       to deep blue on the lower right. Some horizontal lines have gaps that   
       appear dark where some colors are missing. the image. Please see the   
                    explanation for more detailed information.   
      
                          The Sun and Its Missing Colors   
            Image Credit: Nigel Sharp (NSF), FTS, NSO, KPNO, AURA, NSF   
      
      Explanation: Here are all the visible colors of the Sun, produced by   
      passing the Sun's light through a prism-like device. The spectrum was   
      created at the McMath-Pierce Solar Observatory and shows, first off,   
      that although our white-appearing Sun emits light of nearly every   
      color, it appears brightest in yellow-green light. The dark patches in   
      the featured spectrum arise from gas at or above the Sun's surface   
      absorbing sunlight emitted below. Since different types of gas absorb   
      different colors of light, it is possible to determine what gasses   
      compose the Sun. Helium, for example, was first discovered in 1870 on a   
      solar spectrum and only later found here on Earth. Today, the majority   
      of spectral absorption lines have been identified - but not all.   
      
                      Tomorrow's picture: largest satellites   
        __________________________________________________________________   
      
          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,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
   --- BBBS/Li6 v4.10 Toy-6   
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