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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 September 17   
      
                       Perseverance in Jezero Crater's Delta   
                    Image Credit: NASA, JPL-Caltech, MSSS, ASU   
      
      Explanation: The Perseverance rover's Mastcam-Z captured images to   
      create this mosaic on August 4, 2022. The car-sized robot was   
      continuing its exploration of the fan-shaped delta of a river that,   
      billions of years ago, flowed into Jezero Crater on Mars. Sedimentary   
      rocks preserved in Jezero's delta are considered one of the best places   
      on Mars to search for potential signs of ancient microbial life and   
      sites recently sampled by the rover, dubbed Wildcat Ridge and Skinner   
      Ridge, are at lower left and upper right in the frame. The samples   
      taken from these areas were sealed inside ultra-clean sample tubes,   
      ultimately intended for return to Earth by future missions. Starting   
      with the Pathfinder Mission and Mars Global Surveyor in 1997, the last   
      25 years of a continuous robotic exploration of the Red Planet has   
      included orbiters, landers, rovers, and a helicopter from planet Earth.   
      
                     Tomorrow's picture: stone circle analemma   
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          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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