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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 January 6   
      Two spiral galaxies are pictured on the left and right. They galaxy on   
      the left is smaller. Both show red lanes of dust in their spiral arms.   
             Please see the explanation for more detailed information.   
      
                  Colliding Spiral Galaxies from Webb and Hubble   
                        Image Credit: NASA, ESA, CSA, STScI   
      
      Explanation: Billions of years from now, only one of these two galaxies   
      will remain. Until then, spiral galaxies NGC 2207 and IC 2163 will   
      slowly pull each other apart, creating tides of matter, sheets of   
      shocked gas, lanes of dark dust, bursts of star formation, and streams   
      of cast-away stars. The featured image in scientifically assigned   
      colors is a composite of Hubble exposures in visible light and Webb   
      exposures in infrared light. Astronomers predict that NGC 2207, the   
      larger galaxy on the right, will eventually incorporate IC 2163, the   
      smaller galaxy on the left. In the most recent encounter that about   
      peaked 40 million years ago, the smaller galaxy is swinging around   
      counter-clockwise and is now slightly behind the larger galaxy. The   
      space between stars is so vast that when galaxies collide, the stars in   
      them usually do not collide.   
      
                   Jigsaw Challenge: Astronomy Puzzle of the Day   
                        Tomorrow's picture: double red sky   
        __________________________________________________________________   
      
          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.   
      
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