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 14
     [2]The featured image shows stars and the glowing red waves of the
     Great Lacerta Nebula. Please see the explanation for more detailed
                                information.

                      Waves of the Great Lacerta Nebula
   Image Credit & Copyright: [3]Jarmo Ruuth, Telescope Live; Text: [4]Ata
      Sarajedini ([5]Florida Atlantic U., [6]Astronomy Minute podcast)

   Explanation: It is one of the largest nebulas on the sky -- why isn't
   it better known? Roughly the same angular size as the [7]Andromeda
   Galaxy, the Great Lacerta Nebula can be found toward the
   [8]constellation of the Lizard (Lacerta). The [9]emission nebula is
   difficult to see with wide-field binoculars because [10]it is so faint,
   but also usually [11]difficult to see with a large telescope because it
   is so great in angle -- spanning about three [12]degrees. The depth,
   breadth, waves, and beauty of the nebula -- cataloged as [13]Sharpless
   126 (Sh2-126) -- can best be seen and appreciated with a [14]long
   duration camera exposure. The featured image is one such combined
   exposure -- in this case 10 hours over five different colors and over
   six nights during this past June and July at the [15]IC Astronomy
   Observatory in [16]Spain. The [17]hydrogen gas in the Great Lacerta
   Nebula [18]glows red because it is excited by light from the bright
   star [19]10 Lacertae, one of the bright blue stars just above the
   red-glowing nebula's center. The stars and nebula are about 1,200
   [20]light years distant.

           Harvest Full Moon 2022: [21]Notable Submissions to APOD
                       Tomorrow's picture: open space
     __________________________________________________________________

      [22]< | [23]Archive | [24]Submissions | [25]Index | [26]Search |
   [27]Calendar | [28]RSS | [29]Education | [30]About APOD | [31]Discuss |
                                    [32]>
     __________________________________________________________________

    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/GreatLacerta_Ruuth_3719.jpg
   3. https://www.instagram.com/jarmoruuth/
   4. https://physics.fau.edu/people/faculty/sarajedini.php
   5. https://www.physics.fau.edu/
   6. https://open.spotify.com/show/3FD3BcXyAmVwyEqjb0tqHs
   7. https://noirlab.edu/public/images/noao-m31fsqblock/
   8. https://www.iau.org/static/public/constellations/gif/LAC.gif
   9. https://open.spotify.com/episode/4sybbzoATrJzKm7rwciljM
  10. https://open.spotify.com/episode/66XQphfVLgljelmB4gYOp3
  11. https://images.fineartamerica.com/images/artworkimages/mediumlarge/3/cat-looking-surprised-peering-over-the-edge-of-the-picture-john-daniels.jpg
  12. https://www.geogebra.org/m/atq6mr3a
  13. https://www.astrobin.com/6egtl5/
  14. https://apod.nasa.gov/apod/ap200329.html
  15. https://icastronomy.com/
  16. https://en.wikipedia.org/wiki/Spain
  17. https://apod.nasa.gov/apod/ap161024.html
  18. https://open.spotify.com/episode/5mPR3yiM9UKLRjaGe6jobu
  19. https://open.spotify.com/episode/6KLAtMAMknWsqpvmMHna0C
  20. https://spaceplace.nasa.gov/light-year/en/
  21. https://www.facebook.com/media/set/?set=a.5037808269656685&type=3
  22. https://apod.nasa.gov/apod/ap220913.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=220914
  32. https://apod.nasa.gov/apod/ap220915.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/