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.

                              2021 September 16
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                        North America and the Pelican
               Image Credit & [3]Copyright: [4]Andrew Klinger

   Explanation: [5]Fans of our fair planet might recognize the outlines of
   these [6]cosmic clouds. On the left, bright emission outlined by dark,
   obscuring dust lanes seems to trace a continental shape, lending the
   popular name [7]North America Nebula to the emission region cataloged
   as NGC 7000. To the right, just off the North America Nebula's east
   coast, is IC 5070, whose avian [8]profile suggests the [9]Pelican
   Nebula. The two bright nebulae are about 1,500 light-years away, part
   of the same [10]large and complex star forming region, almost as nearby
   as the better-known Orion Nebula. At that distance, the 3 degree wide
   field of view would span 80 light-years. [11]This careful cosmic
   portrait uses [12]narrow band images combined to highlight the bright
   [13]ionization fronts and the characteristic glow from atomic hydrogen,
   sulfur, and oxygen gas. These nebulae can be seen with binoculars from
   a dark location. [14]Look northeast of bright star Deneb in the
   constellation Cygnus the Swan.

                    Tomorrow's picture: Lynds Dark Nebula
     __________________________________________________________________

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    Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell
                                 ([29]UMCP)
          NASA Official: Phillip Newman [30]Specific rights apply.
              [31]NASA Web Privacy Policy and Important Notices
                A service of: [32]ASD at [33]NASA / [34]GSFC
                           & [35]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2109/NGC7000_SHO_AndrewKlinger_res65_sig.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.astrobin.com/users/ak_astro/
   5. https://earthobservatory.nasa.gov/
   6. http://www.atlasoftheuniverse.com/nebclust.html
   7. http://oneminuteastronomer.com/6507/north-america-nebula/
   8. https://en.wikipedia.org/wiki/Dixon_Lanier_Merritt
   9. https://apod.nasa.gov/apod/ap161119.html
  10. http://arxiv.org/abs/astro-ph/0201373
  11. https://www.astrobin.com/27ejyr/0/
  12. https://apod.nasa.gov/apod/ap060324.html
  13. https://apod.nasa.gov/apod/ap100819.html
  14. https://apod.nasa.gov/apod/ap210129.html
  15. https://apod.nasa.gov/apod/ap210915.html
  16. https://apod.nasa.gov/apod/archivepix.html
  17. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  18. https://apod.nasa.gov/apod/lib/aptree.html
  19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  20. https://apod.nasa.gov/apod/calendar/allyears.html
  21. https://apod.nasa.gov/apod.rss
  22. https://apod.nasa.gov/apod/lib/edlinks.html
  23. https://apod.nasa.gov/apod/lib/about_apod.html
  24. http://asterisk.apod.com/discuss_apod.php?date=210916
  25. https://apod.nasa.gov/apod/ap210917.html
  26. http://www.phy.mtu.edu/faculty/Nemiroff.html
  27. http://www.phy.mtu.edu/
  28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  29. http://www.astro.umd.edu/
  30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  31. https://www.nasa.gov/about/highlights/HP_Privacy.html
  32. https://astrophysics.gsfc.nasa.gov/
  33. https://www.nasa.gov/
  34. https://www.nasa.gov/centers/goddard/
  35. http://www.mtu.edu/