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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 24   
      
                                 Jones-Emberson 1   
         Image Credit & Copyright: Serge Brunier, Jean-Frantois Bax, David   
                                 Vernet, C2PU/OCA   
      
      Explanation: Planetary nebula Jones-Emberson 1 is the death shroud of a   
      dying Sun-like star. It lies some 1,600 light-years from Earth toward   
      the sharp-eyed constellation Lynx. About 4 light-years across, the   
      expanding remnant of the dying star's atmosphere was shrugged off into   
      interstellar space, as the star's central supply of hydrogen and then   
      helium for fusion was finally depleted after billions of years. Visible   
      near the center of the planetary nebula is what remains of the stellar   
      core, a blue-hot white dwarf star. Also known as PK 164 +31.1, the   
      nebula is faint and very difficult to glimpse at a telescope's   
      eyepiece. But this deep broadband image combining 22 hours of exposure   
      time does show it off in exceptional detail. Stars within our own Milky   
      Way galaxy as well as background galaxies across the universe are   
      scattered through the clear field of view. Ephemeral on the cosmic   
      stage, Jones-Emberson 1 will fade away over the next few thousand   
      years. Its hot, central white dwarf star will take billions of years to   
      cool.   
      
                            Tomorrow's picture: moonset   
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