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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.   
      
                                    2023 May 6   
      
                           Fomalhaut's Dusty Debris Disk   
         Image Credit: NASA, ESA, CSA, Processing: Andr+ís G+ísp+ír (Univ. of   
       Arizona), Alyssa Pagan (STScI), Science: A. G+ísp+ír (Univ. of Arizona)   
                                      et al.   
      
      Explanation: Fomalhaut is a bright star, a 25 light-year voyage from   
      planet Earth in the direction of the constellation Piscis Austrinus.   
      Astronomers first noticed Fomalhaut's excess infrared emission in the   
      1980s. Space and ground-based telescopes have since identified the   
      infrared emission's source as a disk of dusty debris surrounding the   
      hot, young star related to the ongoing formation of a planetary system.   
      But this sharp infrared image from the James Webb Space Telescope's   
      MIRI camera reveals details of Fomalhaut's debris disk never before   
      seen, including a large dust cloud in the outer ring that is possible   
      evidence for colliding bodies, and an inner dust disk and gap likely   
      shaped and maintained by embedded but unseen planets. An image scale   
      bar in au or astronomical units, the average Earth-Sun distance,   
      appears at the lower left. Fomalhaut's outer circumstellar dust ring   
      lies at about twice the distance of our own Solar System's Kuiper Belt   
      of small icy bodies and debris beyond the orbit of Neptune.   
      
                          Tomorrow's picture: Halley dust   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                                & Michigan Tech. U.   
      
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