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 July 7
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                            The NGC 6914 Complex
               Image Credit & [3]Copyright: [4]Giorgio Ferrari

   Explanation: A study in contrasts, [5]this colorful skyscape features
   [6]stars, dust, and glowing gas in the vicinity of NGC 6914. The
   [7]interstellar complex of nebulae lies some 6,000 light-years away,
   toward the high-flying northern constellation [8]Cygnus and the plane
   of our Milky Way Galaxy. Obscuring interstellar dust clouds appear in
   silhouette while reddish hydrogen [9]emission nebulae, along with the
   dusty blue [10]reflection nebulae, fill the cosmic canvas. Ultraviolet
   radiation from the massive, hot, young stars of the extensive
   [11]Cygnus OB2 association ionize the region's atomic [12]hydrogen gas,
   producing the characteristic red glow as protons and electrons
   recombine. Embedded Cygnus OB2 stars also provide the blue starlight
   strongly reflected by the dust clouds. The over 1 degree wide
   telescopic field of view spans about 100 light-years at the estimated
   distance of NGC 6914.

                       Tomorrow's picture: star treels
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    Authors & editors: [24]Robert Nemiroff ([25]MTU) & [26]Jerry Bonnell
                                 ([27]UMCP)
          NASA Official: Phillip Newman [28]Specific rights apply.
              [29]NASA Web Privacy Policy and Important Notices
                A service of: [30]ASD at [31]NASA / [32]GSFC
                           & [33]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2207/NGC_6914.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.astrobin.com/users/GiorgioFerrari/
   5. https://www.astrobin.com/5vlen5/
   6. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
   7. http://pixinsight.com/gallery/NGC6914-CAHA/index.html
   8. https://apod.nasa.gov/apod/ap070920.html
   9. http://astronomy.swin.edu.au/cosmos/E/Emission+Nebula
  10. http://astronomy.swin.edu.au/cosmos/E/Reflection+Nebula
  11. http://arxiv.org/abs/1003.2463
  12. https://apod.nasa.gov/apod/ap051223.html
  13. https://apod.nasa.gov/apod/ap220706.html
  14. https://apod.nasa.gov/apod/archivepix.html
  15. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  16. https://apod.nasa.gov/apod/lib/aptree.html
  17. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  18. https://apod.nasa.gov/apod/calendar/allyears.html
  19. https://apod.nasa.gov/apod.rss
  20. https://apod.nasa.gov/apod/lib/edlinks.html
  21. https://apod.nasa.gov/apod/lib/about_apod.html
  22. http://asterisk.apod.com/discuss_apod.php?date=220707
  23. https://apod.nasa.gov/apod/ap220710.html
  24. http://www.phy.mtu.edu/faculty/Nemiroff.html
  25. http://www.phy.mtu.edu/
  26. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  27. http://www.astro.umd.edu/
  28. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  29. https://www.nasa.gov/about/highlights/HP_Privacy.html
  30. https://astrophysics.gsfc.nasa.gov/
  31. https://www.nasa.gov/
  32. https://www.nasa.gov/centers/goddard/
  33. http://www.mtu.edu/