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.

                                 2025 June 2
   [2]The featured image shows a night sky with a large complex nebula in
   red and blue. The Veil Nebula has several famous components such as the
     Bat and Witch's Broom Nebulas. Please see the explanation for more
                            detailed information.

                 Veil Nebula: Wisps of an Ancient Supernova
                Image Credit & Copyright: [3]Abdullah Alharbi

   Explanation: Wisps like this are all that remain visible of a Milky Way
   star. About 7,000 years ago that star exploded in a [4]supernova,
   leaving the [5]Veil Nebula. At the time, the expanding cloud was likely
   as bright as a crescent [6]Moon, remaining visible for weeks to people
   living at the [7]dawn of recorded history. Today, the resulting
   [8]supernova remnant, also known as the [9]Cygnus Loop, has faded and
   is [10]now visible only through a small [11]telescope directed toward
   the [12]constellation of the Swan ([13]Cygnus). The remaining Veil
   Nebula is physically huge, however, and even though it lies about 1,400
   [14]light-years distant, it covers over five times the size of the
   [15]full Moon. The [16]featured picture was taken in [17]Kuwait in
   mid-2024 and features light emitted by [18]hydrogen in red and
   [19]oxygen in blue. In deep images of the [20]complete Veil Nebula like
   this, even [21]studious readers might not be able to identify the
   [22]iconic filaments.

           Piece it All Together: [23]Astronomy Puzzle of the Day
                       Tomorrow's picture: rainbow sky
     __________________________________________________________________

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    Authors & editors: [35]Robert Nemiroff ([36]MTU) & [37]Jerry Bonnell
                                 ([38]UMCP)
          NASA Official: Amber Straughn [39]Specific rights apply.
            [40]NASA Web Privacy, [41]Accessibility, [42]Notices;
                A service of: [43]ASD at [44]NASA / [45]GSFC,
                         [46]NASA Science Activation
                           & [47]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2506/VeilWide_Alharbi_5169.jpg
   3. https://www.flickr.com/photos/194569375@N06/
   4. https://spaceplace.nasa.gov/supernova/
   5. https://en.wikipedia.org/wiki/Veil_Nebula
   6. https://apod.nasa.gov/apod/ap210405.html
   7. http://news.bbc.co.uk/2/hi/science/nature/334517.stm
   8. https://apod.nasa.gov/apod/supernova_remnants.html
   9. https://apod.nasa.gov/apod/ap200928.html
  10. https://youtu.be/_O7l9m2pFXM
  11. https://youtu.be/3qOmu-5Uanc
  12. https://en.wikipedia.org/wiki/Constellation
  13. https://en.wikipedia.org/wiki/Cygnus_(constellation)
  14. https://science.nasa.gov/exoplanets/what-is-a-light-year/
  15. https://apod.nasa.gov/apod/ap240915.html
  16. https://www.flickr.com/photos/194569375@N06/53908601291/
  17. https://en.wikipedia.org/wiki/Kuwait
  18. https://www.eia.gov/energyexplained/hydrogen/use-of-hydrogen.php
  19. https://science.nasa.gov/universe/exoplanets/oxygen-on-exoplanets-isnt-proof-of-life/
  20. https://apod.nasa.gov/apod/ap191031.html
  21. https://previews.123rf.com/images/duben/duben1907/duben190700009/128483090-dog-reading-book-with-eyeglasses-professor-behind-the-book.jpg
  22. https://apod.nasa.gov/apod/image/2506/VeilWide_Alharbi_960_annotated.jpg
  23. https://www.scigames.org/apps/webjigsaw2/index.php
  24. https://apod.nasa.gov/apod/ap250601.html
  25. https://apod.nasa.gov/apod/archivepix.html
  26. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  27. https://apod.nasa.gov/apod/lib/aptree.html
  28. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  29. https://apod.nasa.gov/apod/calendar/allyears.html
  30. https://apod.com/feed.rss
  31. https://apod.nasa.gov/apod/lib/edlinks.html
  32. https://apod.nasa.gov/apod/lib/about_apod.html
  33. https://asterisk.apod.com/discuss_apod.php?date=250602
  34. https://apod.nasa.gov/apod/ap250603.html
  35. http://www.phy.mtu.edu/faculty/Nemiroff.html
  36. http://www.phy.mtu.edu/
  37. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  38. http://www.astro.umd.edu/
  39. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  40. https://www.nasa.gov/about/highlights/HP_Privacy.html
  41. https://www.nasa.gov/general/accessibility/
  42. https://www.nasa.gov/privacy/
  43. https://astrophysics.gsfc.nasa.gov/
  44. https://www.nasa.gov/
  45. https://www.nasa.gov/centers/goddard/
  46. https://science.nasa.gov/learners
  47. http://www.mtu.edu/