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 21
    [2]The featured image just the head of the famous Horsehead Nebula as
    captured by the Hubble Space Telescope in infrared light. Please see
               the explanation for more detailed information.

                The Horsehead Nebula in Infrared from Hubble
     Image Credit: [3]NASA, [4]ESA, [5]Hubble; Processing: [6]Alexandra
                                   Nachman

   Explanation: While drifting through the cosmos, a magnificent
   interstellar dust cloud became sculpted by [7]stellar winds and
   radiation to assume a recognizable shape. Fittingly named the
   [8]Horsehead Nebula, it is embedded in the [9]vast and complex Orion
   Nebula (M42). A potentially rewarding but difficult object to [10]view
   personally with a small telescope, the [11]featured gorgeously detailed
   image was [12]taken in [13]infrared light by the orbiting [14]Hubble
   Space Telescope. The [15]dark molecular cloud, roughly 1,500 [16]light
   years distant, is cataloged as Barnard 33 and is seen above primarily
   because it is backlit by the nearby massive star [17]Sigma Orionis. The
   [18]Horsehead Nebula will slowly shift its apparent shape over the next
   few million years and will eventually be [19]destroyed by [20]high
   energy starlight.

   Your Sky Surprise: [21]What picture did APOD feature on your birthday?
                                 (post 1995)
                       Tomorrow's picture: open space
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    Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell
                                 ([36]UMCP)
          NASA Official: Phillip Newman [37]Specific rights apply.
              [38]NASA Web Privacy Policy and Important Notices
                A service of: [39]ASD at [40]NASA / [41]GSFC,
                         [42]NASA Science Activation
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2209/HorseheadIr_HubbleNachman_2691.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/
   5. https://www.nasa.gov/mission_pages/hubble/about
   6. https://www.flickr.com/photos/191751486@N08/
   7. https://apod.nasa.gov/apod/ap000318.html
   8. https://en.wikipedia.org/wiki/Horsehead_Nebula
   9. https://apod.nasa.gov/apod/ap101023.html
  10. https://www.youtube.com/watch?v=-PQpNb_yJVE
  11. https://www.flickr.com/photos/191751486@N08/50918545833/
  12. http://www.youtube.com/watch?v=wgVjrPp38YE#!
  13. https://science.nasa.gov/ems/07_infraredwaves
  14. https://www.stsci.edu/hst/HST_overview
  15. https://apod.nasa.gov/apod/ap120129.html
  16. https://spaceplace.nasa.gov/light-year/en/
  17. https://en.wikipedia.org/wiki/Sigma_Orionis
  18. https://apod.nasa.gov/apod/ap031007.html
  19. https://media.istockphoto.com/photos/funny-dog-made-a-mess-in-the-room-playful-puppy-french-bulldog-picture-id686918844?k=20&m=686918844&s=612x612&w=0&h=qCMidANjUwWYBM5bHviIradVjzCDlZ0gKJBkpSpVm6Q=
  20. https://science.nasa.gov/ems/10_ultravioletwaves
  21. https://apod.nasa.gov/apod/calendar/allyears.html
  22. https://apod.nasa.gov/apod/ap220920.html
  23. https://apod.nasa.gov/apod/archivepix.html
  24. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  25. https://apod.nasa.gov/apod/lib/aptree.html
  26. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  27. https://apod.nasa.gov/apod/calendar/allyears.html
  28. https://apod.nasa.gov/apod.rss
  29. https://apod.nasa.gov/apod/lib/edlinks.html
  30. https://apod.nasa.gov/apod/lib/about_apod.html
  31. http://asterisk.apod.com/discuss_apod.php?date=220921
  32. https://apod.nasa.gov/apod/ap220922.html
  33. http://www.phy.mtu.edu/faculty/Nemiroff.html
  34. http://www.phy.mtu.edu/
  35. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  36. http://www.astro.umd.edu/
  37. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  38. https://www.nasa.gov/about/highlights/HP_Privacy.html
  39. https://astrophysics.gsfc.nasa.gov/
  40. https://www.nasa.gov/
  41. https://www.nasa.gov/centers/goddard/
  42. https://science.nasa.gov/learners
  43. http://www.mtu.edu/