                        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 8
   A red oval and textured nebula is seen surrounded by a faint blue glow.
      A bright star is visible in the center, and many faint stars are
   visible in the background. Please see the explanation for more detailed
                                information.

                      Stellar Wind-Shaped Nebula RCW 58
      Image Credit & Copyright: Mike Selby & Mark Hanson; Text: Natalia
                          Lewandowska (SUNY Oswego)

   Explanation: Imagine traveling to a star about 100 times as massive as
   our Sun, a million times more luminous, and with 30 times the surface
   temperature. Such stars exist, and some are known as Wolf Rayet (WR)
   stars, named after French astronomers Charles Wolf and Georges Rayet.
   The central star in this image is WR 40 which is located toward the
   constellation of Carina. Stars like WR 40 live fast and die young in
   comparison with the Sun. They quickly exhaust their core hydrogen
   supply, move on to fusing heavier core elements, and expand while
   ejecting their outer layers via high stellar winds. In this case, the
   central star WR 40 ejects the atmosphere at a speed of nearly 100
   kilometers per second, and these outer layers have become the expanding
   oval-shaped nebula RCW 58.

                  Almost Hyperspace: Random APOD Generator
                       Tomorrow's picture: open space
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