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 January 25
      [2]An image of a foreboding dark nebula before a red-glowing gas
        background and many bright and colorful stars. Please see the
                 explanation for more detailed information.

                       LDN 1622: The Boogeyman Nebula
                 Image Credit & Copyright: [3]Joshua Carter

   Explanation: To some, the dark shape looks like a mythical
   [4]boogeyman. Scientifically, Lynds' Dark Nebula ([5]LDN) 1622 appears
   against a faint background of glowing hydrogen gas only visible in long
   telescopic exposures of the region. In contrast, the brighter
   reflection nebula [6]vdB 62 is more easily seen just above and to the
   right of center in the [7]featured image. LDN 1622 lies near the plane
   of our Milky Way Galaxy, close [8]on the sky to [9]Barnard's [10]Loop,
   a large cloud surrounding the rich [11]complex of emission nebulae
   found in the Belt and Sword [12]of Orion. With swept-back outlines, the
   [13]obscuring dust of LDN 1622 is thought to lie at a similar distance,
   perhaps 1,500 [14]light-years away. At that distance, this 2-[15]degree
   wide field of view would span about 60 light-years. [16]Young stars do
   [17]lie hidden within the dark expanse and have been [18]revealed in
   [19]Spitzer Space Telescope [20]infrared images.

                     Tomorrow's picture: wild and crazy
     __________________________________________________________________

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    Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell
                                 ([35]UMCP)
          NASA Official: Phillip Newman [36]Specific rights apply.
              [37]NASA Web Privacy Policy and Important Notices
                A service of: [38]ASD at [39]NASA / [40]GSFC,
                         [41]NASA Science Activation
                           & [42]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2301/LDN1622_Carter_2888.jpg
   3. https://www.instagram.com/jc.astrophotos/
   4. https://en.wikipedia.org/wiki/Bogeyman
   5. http://heasarc.gsfc.nasa.gov/W3Browse/nebula-catalog/ldn.html
   6. https://it.wikipedia.org/wiki/VdB_62
   7. https://www.instagram.com/p/CnhRwMapWsn/
   8. https://apod.nasa.gov/apod/ap101023.html
   9. https://en.wikipedia.org/wiki/Barnard%27s_Loop
  10. https://apod.nasa.gov/apod/ap170406.html
  11. https://apod.nasa.gov/apod/ap070125.html
  12. http://www.gb.nrao.edu/~rmaddale/Education/OrionTourCenter/optical.html
  13. https://apod.nasa.gov/apod/ap201122.html
  14. https://spaceplace.nasa.gov/light-year/en/
  15. https://www.1728.org/angsize.htm
  16. https://ui.adsabs.harvard.edu/abs/2009AJ....137.3843B/abstract
  17. https://d.newsweek.com/en/full/1984642/two-cats-hiding-space.jpg
  18. https://www.researchgate.net/figure/The-L1622-cloud-as-seen-by-Spitzer-36-m-blue-8-m-green-and-24-m-red-Emission_fig10_235684871
  19. https://www.nasa.gov/mission_pages/spitzer/infrared/index.html
  20. https://science.nasa.gov/ems/07_infraredwaves
  21. https://apod.nasa.gov/apod/ap230124.html
  22. https://apod.nasa.gov/apod/archivepix.html
  23. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  24. https://apod.nasa.gov/apod/lib/aptree.html
  25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  26. https://apod.nasa.gov/apod/calendar/allyears.html
  27. https://apod.nasa.gov/apod.rss
  28. https://apod.nasa.gov/apod/lib/edlinks.html
  29. https://apod.nasa.gov/apod/lib/about_apod.html
  30. http://asterisk.apod.com/discuss_apod.php?date=230125
  31. https://apod.nasa.gov/apod/ap230126.html
  32. http://www.phy.mtu.edu/faculty/Nemiroff.html
  33. http://www.phy.mtu.edu/
  34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  35. http://www.astro.umd.edu/
  36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  37. https://www.nasa.gov/about/highlights/HP_Privacy.html
  38. https://astrophysics.gsfc.nasa.gov/
  39. https://www.nasa.gov/
  40. https://www.nasa.gov/centers/goddard/
  41. https://science.nasa.gov/learners
  42. http://www.mtu.edu/