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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.   
      
                                  2025 February 7   
      
                         LEDA 1313424: The Bullseye Galaxy   
       Image Credit: NASA, ESA, Imad Pasha (Yale), Pieter van Dokkum (Yale)   
      
      Explanation: The giant galaxy cataloged as LEDA 1313424 is about two   
      and a half times the size of our own Milky Way. Its remarkable   
      appearance in this recently released Hubble Space Telescope image   
      strongly suggests its nickname "The Bullseye Galaxy". Known as a   
      collisional ring galaxy it has nine rings confirmed by telescopic   
      observations, rippling from its center like waves from a pebble dropped   
      into a pond. Of course, the pebble dropped into the Bullseye galaxy was   
      a galaxy itself. Telescopic observations identify the blue dwarf galaxy   
      at center-left as the likely collider, passing through the giant   
      galaxy's center and forming concentric rings in the wake of their   
      gravitational interaction. The Bullseye Galaxy lies some 567 million   
      light-years away toward the constellation Pisces. At that distance,   
      this stunning Hubble image would span about 530,000 light-years.   
      
                         Tomorrow's picture: light-weekend   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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