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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 February 2   
      
                             Reflections on the 1970s   
                      Image Credit & Copyright: Daniel Stern   
      
      Explanation: The 1970s are sometimes ignored by astronomers, like this   
      beautiful grouping of reflection nebulae in Orion - NGC 1977, NGC 1975,   
      and NGC 1973 - usually overlooked in favor of the substantial glow from   
      the nearby stellar nursery better known as the Orion Nebula. Found   
      along Orion's sword just north of the bright Orion Nebula complex,   
      these reflection nebulae are also associated with Orion's giant   
      molecular cloud about 1,500 light-years away, but are dominated by the   
      characteristic blue color of interstellar dust reflecting light from   
      hot young stars. In this sharp color image a portion of the Orion   
      Nebula appears along the bottom border with the cluster of reflection   
      nebulae at picture center. NGC 1977 stretches across the field just   
      below center, separated from NGC 1973 (above right) and NGC 1975 (above   
      left) by dark regions laced with faint red emission from hydrogen   
      atoms. Taken together, the dark regions suggest the region's popular   
      moniker, the Running Man Nebula. At the estimated distance of Orion's   
      dusty molecular cloud this running man would be about 15 light-years   
      across.   
      
                        Tomorrow's picture: pixels in space   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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