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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.   
      
                                 2022 December 14   
      
                             Lunar Dust and Duct Tape   
                           Image Credit: Apollo 17, NASA   
      
      Explanation: Why is the Moon so dusty? On Earth, rocks are weathered by   
      wind and water, creating soil and sand. On the Moon, the history of   
      constant micrometeorite bombardment has blasted away at the rocky   
      surface creating a layer of powdery lunar soil or regolith. For the   
      Apollo astronauts and their equipment, the pervasive, fine, gritty dust   
      was definitely a problem   
      . Fifty years ago, on the lunar surface in December 1972, Apollo 17   
      astronauts Harrison Schmitt and Eugene Cernan needed to repair one of   
      their rover's fenders in an effort to keep the rooster tails of dust   
      away from themselves and their gear. This picture reveals the wheel and   
      fender of their dust covered rover along with the ingenious application   
      of spare maps, clamps, and a grey strip of "duct tape".   
      
                     Tomorrow's picture: Full Moon, Full Mars   
        __________________________________________________________________   
      
          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.   
      
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