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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 June 25   
      
                    Rubin's First Look: A Sagittarius Skyscape   
             Image Credit & License: NSFCÇôDOE Vera C. Rubin Observatory   
      
      Explanation: This interstellar skyscape spans over 4 degrees across   
      crowded starfields toward the constellation Sagittarius and the central   
      Milky Way. A First Look image captured at the new NSFCÇôDOE Vera C. Rubin   
      Observatory, the bright nebulae and star clusters featured include   
      famous stops on telescopic tours of the cosmos: Messier 8 and Messier   
      20. An expansive star-forming region over a hundred light-years across,   
      Messier 8 is also known as the Lagoon Nebula. About 4,000 light-years   
      away the Lagoon Nebula harbors a remarkable cluster of young, massive   
      stars. Their intense radiation and stellar winds energize and agitate   
      this cosmic lagoon's turbulent depths. Messier 20's popular moniker is   
      the Trifid. Divided into three parts by dark interstellar dust lanes,   
      the Trifid Nebula's glowing hydrogen gas creates its dominant red   
      color. But contrasting blue hues in the colorful Trifid are due to dust   
      reflected starlight. The Rubin Observatory visited the Trifid-Lagoon   
      field to acquire all the image data during parts of four nights (May   
      1-4). At full resolution, Rubin's magnificent Sagittarius skyscape is   
      84,000 pixels wide and 51,500 pixels tall.   
      
                        Tomorrow's picture: pixels in space   
        __________________________________________________________________   
      
          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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