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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 December 3   
      Ice clouds are seen over the surface of Mars on the upper right. Toward   
        the lower left is a bright spot in the sky which is likely the Sun   
         setting through Martian dust. Please see the explanation for more   
                               detailed information.   
      
                           Ice Clouds over a Red Planet   
        Image Credit: NASA, JPL-Caltech, Kevin M. Gill; Processing: Rogelio   
                                   Bernal Andreo   
      
      Explanation: If you could stand on Mars -- what might you see? You   
      might look out over a vast orange landscape covered with rocks under a   
      dusty orange sky, with a blue-tinted Sun setting over the horizon, and   
      odd-shaped water clouds hovering high overhead. This was just the view   
      captured last March by NASA's rolling explorer, Perseverance. The   
      orange coloring is caused by rusted iron in the Martian dirt, some of   
      which is small enough to be swept up by winds into the atmosphere. The   
      blue tint near the setting Sun is caused by blue light being   
      preferentially scattered out from the Sun by the floating dust. The   
      light-colored clouds on the right are likely composed of water-ice and   
      appear high in the Martian atmosphere. The shapes of some of these   
      clouds are unusual for Earth and remain a topic of research.   
      
                       Tomorrow's picture: driveway sunspots   
        __________________________________________________________________   
      
          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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