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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 April 14   
        The featured image shows the very center of our Milky Way Galaxy as   
       resolved by the MeerKAT array in radio light. Many supernova remnants   
      and unusual filaments are visible. At the upper right is an inset image   
      of a small region taken in infrared by JWST. Please see the explanation   
                          for more detailed information.   
      
                     The Galactic Center in Radio from MeerKAT   
       Image Credit: NASA, ESA, CSA, STScI, SARAO, S. Crowe (UVA), J. Bally   
                 (CU), R. Fedriani (IAA-CSIC), I. Heywood (Oxford)   
      
      Explanation: What's happening at the center of our galaxy? It's hard to   
      tell with optical telescopes since visible light is blocked by   
      intervening interstellar dust. In other bands of light, though, such as   
      radio, the galactic center can be imaged and shows itself to be quite   
      an interesting and active place. The featured picture shows an image of   
      our Milky Way's center by the MeerKAT array of 64 radio dishes in South   
      Africa. Spanning four times the angular size of the Moon (2 degrees),   
      the image is impressively vast, deep, and detailed. Many known sources   
      are shown in clear detail, including many with a prefix of Sgr, since   
      the galactic center is in the direction of the constellation   
      Sagittarius. In our galaxy's center lies Sgr A, found here in the image   
      center, which houses the Milky Way's central supermassive black hole.   
      Other sources in the image are not as well understood, including the   
      Arc, just to the left of Sgr A, and numerous filamentary threads. The   
      inset image shows a small patch recently imaged in infrared light with   
      the James Webb Space Telescope to investigate the effects of magnetic   
      fields on star formation.   
      
         Open Science: Browse 3,600+ codes in the Astrophysics Source Code   
                                      Library   
                         Tomorrow's picture: star cylinder   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                                & Michigan Tech. U.   
      
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