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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 June 23   
      Saturn is shown taking up most of the frame. Most of the planet appears   
        a banded gold. A thin line that is the rings appears dark brown and   
        runs diagonally from the lower left. The upper part has dark bands   
          which are shadows and behind the shadows the color of Saturn's   
       atmosphere appears blue. Please see the explanation for more detailed   
                                   information.   
      
                         The Colors of Saturn from Cassini   
       Image Credit: NASA, ESA, JPL, ISS, Cassini Imaging Team; Processing &   
                               License: Judy Schmidt   
      
      Explanation: What creates Saturn's colors? The featured picture of   
      Saturn only slightly exaggerates what a human would see if hovering   
      close to the giant ringed world. The image was taken in 2005 by the   
      robot Cassini spacecraft that orbited Saturn from 2004 to 2017. Here   
      Saturn's majestic rings appear directly only as a curved line,   
      appearing brown, in part from its infrared glow. The rings best show   
      their complex structure in the dark shadows they create across the   
      upper part of the planet. The northern hemisphere of Saturn can appear   
      partly blue for the same reason that Earth's skies can appear blue --   
      molecules in the cloudless portions of both planet's atmospheres are   
      better at scattering blue light than red. When looking deep into   
      Saturn's clouds, however, the natural gold hue of Saturn's clouds   
      becomes dominant. It is not known why southern Saturn does not show the   
      same blue hue -- one hypothesis holds that clouds are higher there. It   
      is also not known why some of Saturn's clouds are colored gold.   
      
                        Tomorrow's picture: farthest galaxy   
        __________________________________________________________________   
      
          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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