Astronomy Picture of the Day

   [1]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.

                              2024 February 27
    [2]A large filamentary nebula is shown dominated by red glow but with
       bits of blue on the lower left. The nebula is shown in a dense
   starfield surrounded by other faint red-glowing nebulae. Please see the
                 explanation for more detailed information.

                        Supernova Remnant Simeis 147
      Image Credit & Copyright: [3]Stéphane Vetter ([4]Nuits sacrées)

   Explanation: It's easy to get lost following the intricate, looping,
   and twisting filaments of [5]supernova remnant Simeis 147. Also
   cataloged as Sharpless 2-240, the filamentary nebula goes by the
   popular nickname the Spaghetti Nebula. [6]Seen toward the boundary of
   the [7]constellations of the Bull ([8]Taurus) and the Charioteer
   ([9]Auriga), the impressive gas structure covers nearly 3 [10]degrees
   on the sky, equivalent to 6 [11]full moons. That's about 150
   [12]light-years at the stellar debris cloud's estimated distance of
   3,000 light-years. [13]This composite image includes data taken through
   narrow-band filters isolating emission from [14]hydrogen (red) and
   [15]oxygen (blue) glowing gas. The [16]supernova remnant has an
   estimated age of about 40,000 years, meaning light from this massive
   stellar explosion first reached the [17]Earth when [18]woolly mammoths
   roamed free. Besides the expanding remnant, this [19]cosmic catastrophe
   left behind a [20]pulsar: a spinning [21]neutron star that is the
   remnant of the original star's core.

                     Tomorrow's picture: how night falls
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    Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell
                                 ([36]UMCP)
          NASA Official: Amber Straughn; [37]Specific rights apply.
              [38]NASA Web Privacy Policy and Important Notices
                A service of: [39]ASD at [40]NASA / [41]GSFC,
                         [42]NASA Science Activation
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2402/Simeis147_Vetter_3000.jpg
   3. https://www.facebook.com/stephane.vetter.nuitsacrees
   4. http://www.nuitsacrees.fr/
   5. https://chandra.harvard.edu/xray_sources/supernovas.html
   6. https://apod.nasa.gov/apod/ap101220.html
   7. https://spaceplace.nasa.gov/constellations/
   8. https://en.wikipedia.org/wiki/Taurus_(constellation)
   9. https://en.wikipedia.org/wiki/Auriga_(constellation)
  10. https://www.1728.org/angsize.htm
  11. https://apod.nasa.gov/apod/ap200925.html
  12. https://spaceplace.nasa.gov/light-year/
  13. https://www.facebook.com/photo.php?fbid=7494042507273492
  14. https://en.wikipedia.org/wiki/Hydrogen-alpha
  15. https://periodic.lanl.gov/8.shtml
  16. https://youtu.be/wymMn-SmALY
  17. https://science.nasa.gov/earth/facts/
  18. https://en.wikipedia.org/wiki/Woolly_mammoth#/media/File:Woolly_mammoth_model_Royal_BC_Museum_in_Victoria.jpg
  19. https://mfrost.typepad.com/photos/uncategorized/2008/01/11/boston_terror.jpg
  20. https://en.wikipedia.org/wiki/Pulsar
  21. https://apod.nasa.gov/apod/ap170501.html
  22. https://apod.nasa.gov/apod/ap240226.html
  23. https://apod.nasa.gov/apod/archivepix.html
  24. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  25. https://apod.nasa.gov/apod/lib/aptree.html
  26. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  27. https://apod.nasa.gov/apod/calendar/allyears.html
  28. https://apod.com/feed.rss
  29. https://apod.nasa.gov/apod/lib/edlinks.html
  30. https://apod.nasa.gov/apod/lib/about_apod.html
  31. https://asterisk.apod.com/discuss_apod.php?date=240227
  32. https://apod.nasa.gov/apod/ap240228.html
  33. http://www.phy.mtu.edu/faculty/Nemiroff.html
  34. http://www.phy.mtu.edu/
  35. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  36. http://www.astro.umd.edu/
  37. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  38. https://www.nasa.gov/about/highlights/HP_Privacy.html
  39. https://astrophysics.gsfc.nasa.gov/
  40. https://www.nasa.gov/
  41. https://www.nasa.gov/centers/goddard/
  42. https://science.nasa.gov/learners
  43. http://www.mtu.edu/