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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 31   
        A dark field shows an oblong orange glow with some dark and complex   
          dust lanes running through. Please see the explanation for more   
                               detailed information.   
      
                           The Twisted Disk of NGC 4753   
          Image Credit: NASA, ESA, Hubble; Processing: Alexander Reinartz   
      
      Explanation: What do you think this is? HereCÇÖs a clue: it's bigger than   
      a bread box. Much bigger. The answer is that pictured NGC 4753 is a   
      twisted disk galaxy, where unusual dark dust filaments provide clues   
      about its history. No one is sure what happened, but a leading model   
      holds that a relatively normal disk galaxy gravitationally ripped apart   
      a dusty satellite galaxy while its precession distorted the plane of   
      the accreted debris as it rotated. The cosmic collision is hypothesized   
      to have started about a billion years ago. NGC 4753 is seen from the   
      side, and possibly would look like a normal spiral galaxy from the top.   
      The bright orange halo is composed of many older stars that might trace   
      dark matter. The featured Hubble image was recently reprocessed to   
      highlight ultraviolet and red-light emissions.   
      
         APOD Year in Review: NASA Night Sky Network Presentation for 2024   
                         Tomorrow's picture: nearby triple   
        __________________________________________________________________   
      
          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.   
      
   --- BBBS/Li6 v4.10 Toy-7   
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