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 October 4
    [2]The featured image shows the star forming region M16 known as the
    Eagle Nebula -- but with the stars digitally removed. Please see the
                 explanation for more detailed information.

                   Star-Forming Eagle Nebula without Stars
                  Image Credit & Copyright: [3]Yannick Akar

   Explanation: The whole thing looks like an [4]eagle. A closer look at
   the [5]Eagle Nebula's center, however, shows the [6]bright region is
   actually a window into the center of a larger dark shell of [7]dust.
   Through this window, a brightly-lit [8]workshop appears where a whole
   [9]open cluster of stars is being formed. In this cavity [10]tall
   pillars and [11]round globules of dark dust and cold [12]molecular gas
   remain where stars are still forming. Paradoxically, it is perhaps
   easier to [13]appreciate this impressive factory of [14]star formation
   by seeing it without its stars -- which have been digitally removed in
   the featured image. The Eagle [15]emission nebula, tagged M16, lies
   about 6500 [16]light years away, spans about 20 light-years, and is
   visible with [17]binoculars toward the [18]constellation of the Serpent
   ([19]Serpens). [20]Creating this picture involved over 22 hours of
   imaging and combining colors emitted specifically by [21]hydrogen
   (red), and [22]oxygen (blue).

                    Tomorrow's picture: space dart debris
     __________________________________________________________________

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     __________________________________________________________________

    Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell
                                 ([37]UMCP)
          NASA Official: Phillip Newman [38]Specific rights apply.
              [39]NASA Web Privacy Policy and Important Notices
                A service of: [40]ASD at [41]NASA / [42]GSFC,
                         [43]NASA Science Activation
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2210/M16Eagle_Akar_3365_starless.jpg
   3. https://www.instagram.com/dotexplore/
   4. http://www.pbs.org/wnet/nature/eagles-introduction/3089/
   5. https://en.wikipedia.org/wiki/Eagle_Nebula
   6. https://noirlab.edu/public/images/noao-04086/
   7. https://apod.nasa.gov/apod/ap030706.html
   8. https://youtu.be/lj3t_gjuXWk
   9. https://apod.nasa.gov/apod/open_clusters.html
  10. https://apod.nasa.gov/apod/ap201206.html
  11. https://apod.nasa.gov/apod/ap081228.html
  12. https://apod.nasa.gov/apod/ap201122.html
  13. https://m.media-amazon.com/images/I/51ZjBEW+qNL._AC_SY580_.jpg
  14. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  15. https://apod.nasa.gov/apod/emission_nebulae.html
  16. https://spaceplace.nasa.gov/light-year/en/
  17. https://en.wikipedia.org/wiki/Binoculars
  18. https://chandra.harvard.edu/photo/constellations/index.html
  19. http://chandra.harvard.edu/photo/constellations/serpens.html
  20. https://astrophotomannheim.de/images/m16-eagle-nebula/
  21. https://periodic.lanl.gov/1.shtml
  22. https://www.youtube.com/watch?v=uPK_rSf1WUc
  23. https://apod.nasa.gov/apod/ap221003.html
  24. https://apod.nasa.gov/apod/archivepix.html
  25. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  26. https://apod.nasa.gov/apod/lib/aptree.html
  27. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  28. https://apod.nasa.gov/apod/calendar/allyears.html
  29. https://apod.nasa.gov/apod.rss
  30. https://apod.nasa.gov/apod/lib/edlinks.html
  31. https://apod.nasa.gov/apod/lib/about_apod.html
  32. http://asterisk.apod.com/discuss_apod.php?date=221004
  33. https://apod.nasa.gov/apod/ap221005.html
  34. http://www.phy.mtu.edu/faculty/Nemiroff.html
  35. http://www.phy.mtu.edu/
  36. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  37. http://www.astro.umd.edu/
  38. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  39. https://www.nasa.gov/about/highlights/HP_Privacy.html
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. https://science.nasa.gov/learners
  44. http://www.mtu.edu/