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.

                                2023 August 7
     [2]Mulitple filaments of dark brown run from top to bottom while a
    bright orange dome with small pillars occurs on the bottom right. In
    the background is a blue-glowing gas. Stars dot the frame. Please see
               the explanation for more detailed information.

                 The Pelican Nebula in Gas, Dust, and Stars
                      Credit & Copyright: [3]Abe Jones

   Explanation: The Pelican Nebula is slowly being transformed. IC 5070
   (the official designation) is divided from the larger [4]North America
   Nebula by a [5]molecular cloud filled with dark [6]dust. The
   [7]Pelican, however, receives much study because it is a particularly
   active mix of [8]star formation and evolving gas clouds. The
   [9]featured picture was produced in three specific colors -- light
   emitted by [10]sulfur, [11]hydrogen, and [12]oxygen -- that can help us
   to better understand these interactions. The light from young energetic
   stars is slowly transforming the cold gas to hot gas, with the
   [13]advancing boundary between the two, known as an [14]ionization
   front, visible in bright orange on the right. Particularly dense
   [15]tentacles of cold gas remain. Millions of years from now, the
   [16]Pelican nebula, bounded by dark nebula [17]LDN 935, might no longer
   be known as the [18]Pelican, as the [19]balance and placement of stars
   and gas will surely leave something that appears [20]completely
   different.

                  Tomorrow's picture: Jupiter and the Moons
     __________________________________________________________________

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     __________________________________________________________________

    Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell
                                 ([35]UMCP)
          NASA Official: Phillip Newman [36]Specific rights apply.
              [37]NASA Web Privacy Policy and Important Notices
                A service of: [38]ASD at [39]NASA / [40]GSFC,
                         [41]NASA Science Activation
                           & [42]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2308/LDN935_Jones_1840.jpg
   3. https://www.instagram.com/diy_nasa/
   4. https://apod.nasa.gov/apod/ap000501.html
   5. https://apod.nasa.gov/apod/ap230129.html
   6. https://curator.jsc.nasa.gov/stardust/interstellardust.cfm
   7. https://en.wikipedia.org/wiki/Pelican
   8. https://apod.nasa.gov/apod/ap201206.html
   9. https://www.instagram.com/p/CvXy7lgL8CS/
  10. https://periodic.lanl.gov/16.shtml
  11. https://en.wikipedia.org/wiki/Hydrogen
  12. http://www.chemicool.com/elements/oxygen.html
  13. https://apod.nasa.gov/apod/ap180205.html
  14. https://apod.nasa.gov/apod/ap031013.html
  15. https://en.wikipedia.org/wiki/Tentacle#/media/File:Snail-front-0A.jpg
  16. https://youtu.be/_YEyzvtMx3s
  17. https://www.astrobin.com/co5g86/B/?nc=group&nce=144
  18. http://apod.nasa.gov/cgi-bin/apod/apod_search?tquery=Pelican
  19. https://ui.adsabs.harvard.edu/abs/1980ApJ...239..121B/abstract
  20. https://img.buzzfeed.com/buzzfeed-static/static/2018-03/9/6/asset/buzzfeed-prod-fastlane-03/sub-buzz-18669-1520596548-8.jpg
  21. https://apod.nasa.gov/apod/ap230806.html
  22. https://apod.nasa.gov/apod/archivepix.html
  23. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  24. https://apod.nasa.gov/apod/lib/aptree.html
  25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  26. https://apod.nasa.gov/apod/calendar/allyears.html
  27. https://apod.nasa.gov/apod.rss
  28. https://apod.nasa.gov/apod/lib/edlinks.html
  29. https://apod.nasa.gov/apod/lib/about_apod.html
  30. https://asterisk.apod.com/discuss_apod.php?date=230807
  31. https://apod.nasa.gov/apod/ap230808.html
  32. http://www.phy.mtu.edu/faculty/Nemiroff.html
  33. http://www.phy.mtu.edu/
  34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  35. http://www.astro.umd.edu/
  36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  37. https://www.nasa.gov/about/highlights/HP_Privacy.html
  38. https://astrophysics.gsfc.nasa.gov/
  39. https://www.nasa.gov/
  40. https://www.nasa.gov/centers/goddard/
  41. https://science.nasa.gov/learners
  42. http://www.mtu.edu/