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 September 20
       [2]The featured image shows the star forming nebula NGC 3576 in
    multiple false colors. A central dust structure may appear similar to
     the Statue of Liberty. Please see the explanation for more detailed
                                information.

                 Star Forming Region NGC 3582 without Stars
                 Image Credit & Copyright: [3]Chris Willocks

   Explanation: What's happening in the [4]Statue of Liberty nebula?
   [5]Bright stars and [6]interesting molecules are forming and being
   [7]liberated. The [8]complex nebula resides in the star forming region
   called RCW 57, and besides the iconic monument, to some looks like a
   [9]flying superhero or a [10]weeping angel. By digitally removing the
   stars, [11]this re-assigned color image showcases dense knots of
   [12]dark interstellar dust, fields of [13]glowing hydrogen gas ionized
   by these stars, and [14]great loops of gas expelled by dying stars. A
   [15]detailed study of NGC 3576, also known as [16]NGC 3582 and [17]NGC
   3584, uncovered at least 33 massive stars in the end stages of
   formation, and the clear presence of the complex carbon molecules known
   as [18]polycyclic aromatic hydrocarbons (PAHs). PAHs are thought to be
   created in the cooling gas of [19]star forming regions, and their
   development in the [20]Sun's formation nebula five billion years ago
   may have been an important step in the [21]development of life on
   Earth.

   Your Sky Surprise: [22]What picture did APOD feature on your birthday?
                                 (post 1995)
                    Tomorrow's picture: horse red nebula
     __________________________________________________________________

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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/2209/NGC3576_Willocks_3300_Starless.jpg
   3. https://www.instagram.com/chris.willocks/
   4. https://apod.nasa.gov/apod/ap120509.html
   5. https://apod.nasa.gov/apod/ap211124.html
   6. https://www.acs.org/content/acs/en/molecule-of-the-week/
   7. https://en.wikipedia.org/wiki/Liberty
   8. http://www.atlasoftheuniverse.com/nebulae/ngc3576.html
   9. https://thumbs.dreamstime.com/b/superhero-dog-flying-clouds-funny-bulldog-dressed-as-super-hero-red-shirt-blue-cape-sky-48240315.jpg
  10. https://en.wikipedia.org/wiki/Weeping_Angel
  11. https://www.instagram.com/p/CiLbwqOMDAc/
  12. https://apod.nasa.gov/apod/ap050110.html
  13. https://apod.nasa.gov/apod/emission_nebulae.html
  14. https://apod.nasa.gov/apod/ap990503.html
  15. https://ui.adsabs.harvard.edu/abs/2006A&A...450..253M/abstract
  16. https://en.wikipedia.org/wiki/NGC_3576
  17. http://server7.wikisky.org/starview?object_type=3&object_id=218&object_name=NGC+3584&locale=EN
  18. https://en.wikipedia.org/wiki/Polycyclic_aromatic_hydrocarbons
  19. http://server7.wikisky.org/starview?object_type=3&object_id=218&object_name=NGC+3584&locale=EN
  20. https://en.wikipedia.org/wiki/Formation_and_evolution_of_the_Solar_System
  21. https://science.nasa.gov/solar-system/big-questions/how-did-life-begin-and-evolve-earth-and-has-it-evolved-elsewhere-solar-system
  22. https://apod.nasa.gov/apod/calendar/allyears.html
  23. https://apod.nasa.gov/apod/ap220919.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=220920
  33. https://apod.nasa.gov/apod/ap220921.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/