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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.   
      
                                    2022 July 6   
      
                         Milky Way Motion in 3D from Gaia   
         Credit & License: ESA, Gaia, DPAC; Text: Ata Sarajedini (Florida   
                      Atlantic U., Astronomy Minute podcast)   
      
      Explanation: Our sky is alive with the streams of stars. The motions of   
      26 million Milky Way stars are evident in the featured map constructed   
      from recent data taken by ESA's Gaia satellite. Stars colored blue are   
      moving toward us, while red indicates away. Lines depict the motion of   
      the stars across the sky. The large blue on the left and red areas on   
      the map's right give the overall impression that stars in the Milky Way   
      are rotating around the center. However, there is a region near the   
      middle -- caused by our own Sun's motion relative to a rigidly-rotating   
      central Galactic bar -- that seems to reverse it. Understanding details   
      about the motion of stars is helping humanity to better understand the   
      complex history of our Milky Way galaxy and the origin of our Sun.   
      
                          Tomorrow's picture: open space   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
                   NASA Web Privacy Policy and Important Notices   
                         A service of: ASD at NASA / GSFC   
                                & Michigan Tech. U.   
      
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