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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 July 24   
      Earth's Moon is shown with the heights of surface features all greatly   
        exaggerated. Also, the colors of the Moon have been exaggerated so   
      areas of blue and red are more easily seen. Please see the explanation   
                          for more detailed information.   
      
                                 Exaggerated Moon   
      Credit: Data: NASA, Lunar Orbiter Laser Altimeter; Image & Processing:   
                                  Ildar Ibatullin   
      
      Explanation: Our Moon doesn't really have craters this big. Earth's   
      Moon, Luna, also doesn't naturally show this spikey texture, and its   
      colors are more subtle. But this digital creation is based on reality.   
      The featured image is a digital composite of a good Moon image and   
      surface height data taken from NASA's Lunar Orbiter Laser Altimeter   
      (LOLA) mission -- and then exaggerated for educational understanding.   
      The digital enhancements, for example, accentuate lunar highlands and   
      show more clearly craters that illustrate the tremendous bombardment   
      our Moon has been through during its 4.6-billion-year history. The dark   
      areas, called maria, have fewer craters and were once seas of molten   
      lava. Additionally, the image colors, although based on the moon's real   
      composition, are changed and exaggerated. Here, a blue hue indicates a   
      region that is iron rich, while orange indicates a slight excess of   
      aluminum. Although the Moon has shown the same side to the Earth for   
      billions of years, modern technology is allowing humanity to learn much   
      more about it -- and how it affects the Earth.   
      
                          Tomorrow's picture: open 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.   
      
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