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.

                                2022 June 22
    [2]The featured image shows a composite of long duration exposures of
      he Veil Nebula, the glowing gaseous remnants of a supernova that
    occurred about ten thousand years ago. Please see the explanation for
                         more detailed information.

                     Supernova Remnant: The Veil Nebula
        Image Credit & Copyright: [3]Craig Stocks (Utah Desert Remote
                               Observatories)

   Explanation: Ten thousand years ago, before the dawn of [4]recorded
   human history, a new light would have suddenly have appeared in the
   night sky and faded after a few weeks. Today we know this light was
   from a [5]supernova, or exploding star, and record the expanding debris
   cloud as the [6]Veil Nebula, a [7]supernova remnant. Imaged with color
   filters featuring light emitted by [8]sulfur (red), [9]hydrogen
   (green), and [10]oxygen (blue), this deep wide-angle view was processed
   to remove the [11]stars and so better capture the impressive glowing
   filaments of the Veil. Also known as the [12]Cygnus Loop, the [13]Veil
   Nebula is roughly circular in shape and covers nearly 3 degrees on the
   sky toward the [14]constellation of the Swan (Cygnus). [15]Famous
   nebular [16]sections include the [17]Bat Nebula, the [18]Witch's Broom
   Nebula, and [19]Fleming's Triangular Wisp. The [20]complete supernova
   remnant lies about 1,400 [21]light-years away.

                       Tomorrow's picture: open space
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    Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell
                                 ([36]UMCP)
          NASA Official: Phillip Newman [37]Specific rights apply.
              [38]NASA Web Privacy Policy and Important Notices
                A service of: [39]ASD at [40]NASA / [41]GSFC
                           & [42]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2206/Veil_Stocks_2560.jpg
   3. https://craigstocksarts.com/resume.html
   4. https://en.wikipedia.org/wiki/Recorded_history
   5. https://chandra.harvard.edu/xray_sources/supernovas.html
   6. https://apod.nasa.gov/apod/ap121126.html
   7. https://en.wikipedia.org/wiki/List_of_supernova_remnants
   8. https://periodic.lanl.gov/16.shtml
   9. https://periodic.lanl.gov/1.shtml
  10. https://periodic.lanl.gov/8.shtml
  11. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  12. https://en.wikipedia.org/wiki/Cygnus_Loop
  13. https://en.wikipedia.org/wiki/Veil_Nebula
  14. https://en.wikipedia.org/wiki/Cygnus_(constellation)
  15. https://mir-s3-cdn-cf.behance.net/project_modules/max_1200/98880a65948559.5b05916bdc9e3.jpg
  16. https://en.wikipedia.org/wiki/Veil_Nebula#/media/File:Cygnus_Loop_Labeled.png
  17. https://apod.nasa.gov/apod/ap211027.html
  18. https://apod.nasa.gov/apod/ap180408.html
  19. https://apod.nasa.gov/apod/ap210727.html
  20. https://youtu.be/rsqZlXREz2E
  21. https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html
  22. https://apod.nasa.gov/apod/ap220621.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.nasa.gov/apod.rss
  29. https://apod.nasa.gov/apod/lib/edlinks.html
  30. https://apod.nasa.gov/apod/lib/about_apod.html
  31. http://asterisk.apod.com/discuss_apod.php?date=220622
  32. https://apod.nasa.gov/apod/ap220623.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. http://www.mtu.edu/