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.

                               2024 January 23
     [2]A very deep image of the night sky shows many stars and nebulas.
    Many bright nebulas appear to be connected by faint orange filaments.
          Please see the explanation for more detailed information.

                  Deep Nebulas: From Seagull to California
                 Image Credit & Copyright: [3]Alistair Symon

   Explanation: How well do you know the night sky? OK, but how well can
   you identify famous sky objects in a [4]very deep image? Either way,
   here is a test: see if you can find some well-known [5]night-sky icons
   in a deep image filled with faint nebulosity. This image contains the
   [6]Pleiades star cluster, [7]Barnard's Loop, [8]Horsehead Nebula,
   [9]Orion Nebula, [10]Rosette Nebula, [11]Cone Nebula, [12]Rigel,
   [13]Jellyfish Nebula, [14]Monkey Head Nebula, [15]Flaming Star Nebula,
   [16]Tadpole Nebula, [17]Aldebaran, [18]Simeis 147, [19]Seagull Nebula
   and the [20]California Nebula. To find their real locations, [21]here
   is an annotated image version. The reason this task might be difficult
   is similar to the reason it is initially hard to identify familiar
   [22]constellations in a very [23]dark sky: the tapestry of our night
   sky has an extremely deep [24]hidden complexity. The [25]featured
   composite reveals some of [26]this complexity in a [27]mosaic of 28
   images taken over 800 hours from dark skies over [28]Arizona, [29]USA.

                      Tomorrow's picture: you are here
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    Authors & editors: [41]Robert Nemiroff ([42]MTU) & [43]Jerry Bonnell
                                 ([44]UMCP)
          NASA Official: Amber Straughn; [45]Specific rights apply.
              [46]NASA Web Privacy Policy and Important Notices
                A service of: [47]ASD at [48]NASA / [49]GSFC,
                         [50]NASA Science Activation
                           & [51]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2401/SeagullToCalifornia_Symon_2000.jpg
   3. https://www.woodlandsobservatory.com/
   4. https://apod.nasa.gov/apod/ap210802.html
   5. https://science.nasa.gov/skywatching/whats-up/
   6. https://apod.nasa.gov/apod/ap221205.html
   7. https://apod.nasa.gov/apod/ap050420.html
   8. https://apod.nasa.gov/apod/ap231120.html
   9. https://apod.nasa.gov/apod/ap210629.html
  10. https://apod.nasa.gov/apod/ap120214.html
  11. https://apod.nasa.gov/apod/ap230110.html
  12. https://apod.nasa.gov/apod/ap220124.html
  13. https://apod.nasa.gov/apod/ap231226.html
  14. https://apod.nasa.gov/apod/ap061208.html
  15. https://apod.nasa.gov/apod/ap230301.html
  16. https://apod.nasa.gov/apod/ap221219.html
  17. https://apod.nasa.gov/apod/ap200122.html
  18. https://apod.nasa.gov/apod/ap160425.html
  19. https://apod.nasa.gov/apod/ap230119.html
  20. https://apod.nasa.gov/apod/ap221022.html
  21. https://apod.nasa.gov/apod/image/2401/SeagullToCalifornia_Symon_2000_Annotated.jpg
  22. https://spaceplace.nasa.gov/constellations/
  23. https://apod.nasa.gov/apod/ap200408.html
  24. https://apod.nasa.gov/apod/ap230717.html
  25. https://www.facebook.com/photo?fbid=1001049588109535
  26. https://i2-prod.mirror.co.uk/incoming/article27598932.ece/ALTERNATES/s1200d/1_SWNS_SURPRISED_DOG_008.jpg
  27. https://www.woodlandsobservatory.com/SeagullCalifornia/SeagullToCalifornia2023.htm
  28. https://youtu.be/sj13_HK_WUU?t=29
  29. https://en.wikipedia.org/wiki/United_States
  30. https://apod.nasa.gov/apod/ap240122.html
  31. https://apod.nasa.gov/apod/archivepix.html
  32. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  33. https://apod.nasa.gov/apod/lib/aptree.html
  34. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  35. https://apod.nasa.gov/apod/calendar/allyears.html
  36. https://apod.com/feed.rss
  37. https://apod.nasa.gov/apod/lib/edlinks.html
  38. https://apod.nasa.gov/apod/lib/about_apod.html
  39. https://asterisk.apod.com/discuss_apod.php?date=240123
  40. https://apod.nasa.gov/apod/ap240124.html
  41. http://www.phy.mtu.edu/faculty/Nemiroff.html
  42. http://www.phy.mtu.edu/
  43. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  44. http://www.astro.umd.edu/
  45. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  46. https://www.nasa.gov/about/highlights/HP_Privacy.html
  47. https://astrophysics.gsfc.nasa.gov/
  48. https://www.nasa.gov/
  49. https://www.nasa.gov/centers/goddard/
  50. https://science.nasa.gov/learners
  51. http://www.mtu.edu/