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 November 27
   [2]A light brown nebula is seen on a dark starfield. The outline of the
        nebula makes it appear like an eagle ray fish. Please see the
                 explanation for more detailed information.

                        LBN 86: The Eagle Ray Nebula
                 Image Credit & Copyright: [3]Vikas Chander

   Explanation: This [4]eagle ray [5]glides across a cosmic sea.
   Officially cataloged as [6]SH2-63 and LBN 86, the dark nebula is
   composed of gas and dust that just happens to appear shaped like a
   [7]common ocean fish. The [8]interstellar dust nebula appears light
   brown as it [9]blocks and [10]reddens visible light emitted behind it.
   Dark nebulas glow primarily in [11]infrared light, but also reflect
   [12]visible light from surrounding stars. The dust in dark nebulas is
   usually sub-millimeter chunks of [13]carbon, silicon, and oxygen,
   frequently coated with frozen [14]carbon monoxide and [15]nitrogen.
   Dark nebulas are also known as [16]molecular clouds because they also
   contain relatively high amounts of [17]molecular [18]hydrogen and
   [19]larger molecules. Previously unnamed, the here dubbed [20]Eagle Ray
   Nebula is normally [21]quite dim but has been imaged clearly over
   20-hours through [22]dark skies in [23]Chile.

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    Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell
                                 ([39]UMCP)
          NASA Official: Phillip Newman [40]Specific rights apply.
              [41]NASA Web Privacy Policy and Important Notices
                A service of: [42]ASD at [43]NASA / [44]GSFC,
                         [45]NASA Science Activation
                           & [46]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2311/EagleRay_Chander_3277.jpg
   3. https://www.instagram.com/vikaschanderastrophotography/
   4. https://en.wikipedia.org/wiki/Eagle_ray
   5. https://youtu.be/sHgPqrBF8bA
   6. https://www.astrobin.com/qa64zs/
   7. https://www.georgiaaquarium.org/animal/spotted-eagle-ray/
   8. https://apod.nasa.gov/apod/ap990509.html
   9. https://apod.nasa.gov/apod/ap230129.html
  10. http://burro.astr.cwru.edu/Academics/Astr221/StarProp/dust.html
  11. https://science.nasa.gov/ems/07_infraredwaves/
  12. https://science.nasa.gov/ems/09_visiblelight/
  13. https://apod.nasa.gov/apod/ap230108.html
  14. https://earthobservatory.nasa.gov/global-maps/MOP_CO_M
  15. https://youtu.be/qVKod6Rv6dE
  16. https://apod.nasa.gov/apod/ap231123.html
  17. https://en.wikipedia.org/wiki/Diatomic_molecule
  18. https://en.wikipedia.org/wiki/Hydrogen
  19. https://apod.nasa.gov/apod/ap120821.html
  20. https://youtu.be/sHgPqrBF8bA
  21. https://media.istockphoto.com/id/1326946398/photo/curious-dog-funny-pug-looking-through-binoculars.jpg?s=1024x1024&w=is&k=20&c=daD-I9x7Ukt1qUsyqChchDFUt6vaI5vfvswI3dzJCUM=
  22. https://apod.nasa.gov/apod/ap200408.html
  23. https://en.wikipedia.org/wiki/Chile
  24. https://discord.com/api/oauth2/authorize?client_id=875759903740948520&permissions=34628291664&scope=bot applications.commands
  25. https://apod.nasa.gov/apod/ap231126.html
  26. https://apod.nasa.gov/apod/archivepix.html
  27. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  28. https://apod.nasa.gov/apod/lib/aptree.html
  29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  30. https://apod.nasa.gov/apod/calendar/allyears.html
  31. https://apod.com/feed.rss
  32. https://apod.nasa.gov/apod/lib/edlinks.html
  33. https://apod.nasa.gov/apod/lib/about_apod.html
  34. https://asterisk.apod.com/discuss_apod.php?date=231127
  35. https://apod.nasa.gov/apod/ap231128.html
  36. http://www.phy.mtu.edu/faculty/Nemiroff.html
  37. http://www.phy.mtu.edu/
  38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  39. http://www.astro.umd.edu/
  40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  41. https://www.nasa.gov/about/highlights/HP_Privacy.html
  42. https://astrophysics.gsfc.nasa.gov/
  43. https://www.nasa.gov/
  44. https://www.nasa.gov/centers/goddard/
  45. https://science.nasa.gov/learners
  46. http://www.mtu.edu/