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 1
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                          The Tulip and Cygnus X-1
               Image Credit & [3]Copyright: [4]Peter Kohlmann

   Explanation: Framing a bright emission region, [5]this telescopic view
   looks out along the plane of our Milky Way Galaxy toward the nebula
   rich constellation Cygnus the Swan. Popularly called the Tulip Nebula,
   the reddish glowing cloud of interstellar gas and dust is also found in
   the [6]1959 catalog by astronomer Stewart Sharpless [7]as Sh2-101.
   Nearly 70 light-years across, the complex and beautiful Tulip Nebula
   blossoms about 8,000 light-years away. Ultraviolet radiation from young
   energetic stars at the edge of the Cygnus [8]OB3 association, including
   [9]O star HDE 227018, [10]ionizes the atoms and powers the emission
   from the Tulip Nebula. Also in the field of view is microquasar
   [11]Cygnus X-1, one of the strongest X-ray sources in planet Earth's
   sky. Blasted by powerful jets from a [12]lurking black hole its fainter
   bluish curved shock front is only just visible though, [13]beyond the
   cosmic Tulip's petals near the right side of the frame.

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    Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell
                                 ([29]UMCP)
          NASA Official: Phillip Newman [30]Specific rights apply.
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                A service of: [32]ASD at [33]NASA / [34]GSFC,
                         [35]NASA Science Activation
                           & [36]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2209/TulipCygX-1.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.astrobin.com/users/peterkohlmann/
   5. https://www.astrobin.com/q8eq4b/B/
   6. http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1959ApJS....4..257S
   7. http://galaxymap.org/cat/list/sharpless/101
   8. http://en.wikipedia.org/wiki/Stellar_kinematics#OB_associations
   9. https://apod.nasa.gov/apod/ap070726.html
  10. https://apod.nasa.gov/apod/ap111103.html
  11. http://chandra.harvard.edu/photo/2011/cygx1/
  12. https://exoplanets.nasa.gov/resources/2259/devoured-by-gravity-poster/?galaxy_horror
  13. https://apod.nasa.gov/apod/ap090608.html
  14. https://science.nasa.gov/learners/back-to-school
  15. https://apod.nasa.gov/apod/ap220831.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=220901
  25. https://apod.nasa.gov/apod/ap220902.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. https://science.nasa.gov/learners
  36. http://www.mtu.edu/