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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 November 8   
       A deep space image showing many galaxies, some of which are seen in a   
       central bar running nearly horizontally across the image. Please see   
                  the explanation for more detailed information.   
      
                        Perseus Galaxy Cluster from Euclid   
           Image Credit & License: ESA, Euclid, Euclid Consortium, NASA;   
         Processing: Jean-Charles Cuillandre (CEA Paris-Saclay) & Giovanni   
                      Anselmi; Text: Jean-Charles Cuillandre   
      
      Explanation: There's a new space telescope in the sky: Euclid. Equipped   
      with two large panoramic cameras, Euclid captures light from the   
      visible to the near-infrared. It took five hours of observing for   
      Euclid's 1.2-meter diameter primary mirror to capture, through its   
      sharp optics, the 1000+ galaxies in the Perseus cluster, which lies 250   
      million light years away. More than 100,000 galaxies are visible in the   
      background, some as far away as 10 billion light years. The   
      revolutionary nature of Euclid lies in the combination of its wide   
      field of view (twice the area of the full moon), its high angular   
      resolution (thanks to its 620 Megapixel camera), and its infrared   
      vision, which captures both images and spectra. Euclid's initial   
      surveys, covering a third of the sky and recording over 2 billion   
      galaxies, will enable a study of how dark matter and dark energy have   
      shaped our universe.   
      
                              Tomorrow's picture: M1   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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