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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 August 29   
       Spiral galaxy M66 is shown in infrared light as seen by the orbiting   
         James Webb Space Telescope. A reddish-brown center is seen in the   
          galaxy with a blue-colored spiral arms surrounding it. A close   
        inspection will reveal that these spiral arms are not symmetrical.   
             Please see the explanation for more detailed information.   
      
                        Unusual Spiral Galaxy M66 from Webb   
          Image Credit: NASA, ESA, CSA, JWST; Processing: Brian Tomlinson   
      
      Explanation: Why isn't spiral galaxy M66 symmetric? Usually, density   
      waves of gas, dust, and newly formed stars circle a spiral galaxy's   
      center and create a nearly symmetric galaxy. The differences between   
      M66's spiral arms and the apparent displacement of its nucleus are all   
      likely caused by previous close interactions and the tidal   
      gravitational pulls of nearby galaxy neighbors M65 and NGC 3628. The   
      galaxy, featured here in infrared light taken by the James Webb Space   
      Telescope, spans about 100,000 light years, lies about 35 million light   
      years distant, and is the largest galaxy in a group known as the Leo   
      Triplet. Like many spiral galaxies, the long and intricate dust lanes   
      of M66 are seen intertwined with the bright stars and intergalactic   
      dust that follow the spiral arms.   
      
                          Tomorrow's picture: open space   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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