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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 January 28   
      
                             Comet ZTF over Mount Etna   
                    Image Credit & Copyright: Dario Giannobile   
      
      Explanation: Comet-like plumes are blowing over the volcanic peaks of   
      Mount Etna in this wintry mountain-and-skyscape from planet Earth. The   
      stacked and blended combination of individual exposures recorded during   
      the cold night of January 23, also capture naked-eye Comet ZTF just   
      above Etna's snowy slopes. Of course increasing sunlight and the solar   
      wind are responsible for the comet's greenish coma and broad dusty   
      tail. This weekend Comet ZTF is dashing across northern skies between   
      north star Polaris and the Big Dipper. From a dark site you can only   
      just spot it as a fuzzy patch though. That's still an impressive   
      achievement if you consider you are gazing at a visitor from the   
      distant Oort cloud with your own eyes. But binoculars or a small   
      telescope will make for an even more enjoyable view of this Comet ZTF   
      in the coming days.   
      
                  Comet ZTF Gallery: Notable Submissions to APOD   
                    Tomorrow's picture: dark marking on the sky   
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