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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.

                              2025 December 29
      A dark starfield surrounds a colorful nebula filled with tangled
    filaments. Please see the explanation for more detailed information.

                             M1: The Crab Nebula
                     Image Credit & Copyright: Alan Chen

   Explanation: This is the mess that is left when a star explodes. The
   Crab Nebula, the result of a supernova seen in 1054 AD, is filled with
   mysterious filaments. The filaments are not only tremendously complex
   but appear to have less mass than expelled in the original supernova
   and a higher speed than expected from a free explosion. The featured
   image was taken by an amateur astronomer in Leesburg, Florida, USA over
   three nights last month. It was captured in three primary colors but
   with extra detail provided by specific emission by hydrogen gas. The
   Crab Nebula spans about 10 light years. In the Nebula's very center
   lies a pulsar: a neutron star as massive as the Sun but with only the
   size of a small town. The Crab Pulsar rotates about 30 times each
   second.

                 Explore the Universe: Random APOD Generator
                    Tomorrow's picture: artificial comet
     __________________________________________________________________

       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Amber Straughn Specific rights apply.
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                             & Michigan Tech. U.

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