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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.   
      
                                  2026 February 3   
       A dense starfield surrounds a blue and red nebula that stretches from   
       the lower left to the upper right. The outer parts of the nebula are   
         blue and filamentary, while the innermost part is red and bright.   
             Please see the explanation for more detailed information.   
      
                       Red Spider Planetary Nebula from Webb   
              Image Credit: ESA/Webb, NASA & CSA, J. H. Kastner (RIT)   
      
      Explanation: Oh what a tangled web a planetary nebula can weave. The   
      Red Spider Planetary Nebula shows the complex structure that can result   
      when a normal star ejects its outer gases and becomes a white dwarf   
      star. Officially tagged NGC 6537, this two-lobed symmetric planetary   
      nebula houses one of the hottest white dwarfs ever observed, probably   
      as part of a binary star system. Internal winds flowing out from the   
      central stars, have been measured in excess of 1,000 kilometers per   
      second. These winds expand the nebula, flow along the nebula's walls,   
      and cause waves of hot gas and dust to collide. Atoms caught in these   
      colliding shocks radiate light shown in the featured false-color   
      infrared picture by the James Webb Space Telescope. The Red Spider   
      Nebula lies toward the constellation of the Archer (Sagittarius). Its   
      distance is not well known but has been estimated by some to be about   
      4,000 light-years.   
      
                        Tomorrow's picture: ringing galaxy   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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