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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 July 16   
         A deep image of the Rosette Nebula is shown along with a field of   
        stars. As many color filters were used, the flowery nebula takes on   
      many colors with blue in the center, yellow and orange around the blue,   
          and red around the outside. Please see the explanation for more   
                               detailed information.   
      
                           The Rosette Nebula from DECam   
       Image Credit: CTIO, NOIRLab, DOE, NSF, AURA; Processing: T. A. Rector   
          (U. Alaska Anchorage), D. de Martin (NSFCÇÖs NOIRLab) & M. Zamani   
      
      Explanation: Would the Rosette Nebula by any other name look as sweet?   
      The bland New General Catalog designation of NGC 2237 doesn't appear to   
      diminish the appearance of this flowery emission nebula, as captured by   
      the Dark Energy Camera (DECam) on the Blanco 4-meter telescope at the   
      NSF's Cerro Tololo Inter-American Observatory in Chile. Inside the   
      nebula lies an open cluster of bright young stars designated NGC 2244.   
      These stars formed about four million years ago from the nebular   
      material and their stellar winds are clearing a hole in the nebula's   
      center, insulated by a layer of dust and hot gas. Ultraviolet light   
      from the hot cluster stars causes the surrounding nebula to glow. The   
      Rosette Nebula spans about 100 light-years across, lies about 5000   
      light-years away, and can be seen with a small telescope towards the   
      constellation of the Unicorn (Monoceros).   
      
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