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   CHRS: LATIN-1 2   
                           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.   
      
                                  2024 August 21   
        A blue oval is shown with a red and yellow horizontal band running   
      across the middle. Red and yellow spots also appear distributed inside   
        the oval. Please see the explanation for more detailed information.   
      
                       Fermi's 12-year All-Sky Gamma-ray Map   
       Image Credit: NASA, DOE, Fermi LAT Collaboration; Text: Barb Mattson   
                            (U. Maryland, NASA's GSFC)   
      
      Explanation: Forget X-ray vision CÇö imagine what you could see with   
      gamma-ray vision! The featured all-sky map shows what the universe   
      looks like to NASA's Fermi Gamma-ray Space Telescope. Fermi sees light   
      with energies about a billion times what the human eye can see, and the   
      map combines 12 years of Fermi observations. The colors represent the   
      brightness of the gamma-ray sources, with brighter sources appearing   
      lighter in color. The prominent stripe across the middle is the central   
      plane of our Milky Way galaxy. Most of the red and yellow dots   
      scattered above and below the Milky WayCÇÖs plane are very distant   
      galaxies, while most of those within the plane are nearby pulsars. The   
      blue background that fills the image is the diffuse glow of gamma-rays   
      from distant sources that are too dim to be detected individually. Some   
      gamma-ray sources remain unidentified and topics of research CÇö   
      currently no one knows what they are.   
      
                          Tomorrow's picture: open space   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
                     NASA Web Privacy, Accessibility, Notices;   
                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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