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 November 1
   [2]The featured image the Lobster Nebula, star field with a few bright
   blue stars surrounded by a red-glowing nebula that could be visualized
   as a lobster. Please see the explanation for more detailed information.

                        NGC 6357: The Lobster Nebula
     Image Credit: [3]CTIO/[4]NOIRLab/[5]DOE/[6]NSF/[7]AURA; Processing:
     [8]T. A. Rector ([9]U. Alaska Anchorage/[10]NSF's [11]NOIRLab), J.
    Miller ([12]Gemini Obs./[13]NSF's [14]NOIRLab), [15]M. Zamani & D. de
                       Martin ([16]NSF's [17]NOIRLab)

   Explanation: Why is the Lobster Nebula forming some of the most massive
   stars known? [18]No one is yet sure. Cataloged as NGC 6357, the Lobster
   Nebula houses the open star cluster [19]Pismis 24 near its center -- a
   home to unusually bright and [20]massive stars. The overall red glow
   near the inner star forming region results from the [21]emission of
   [22]ionized [23]hydrogen gas. The surrounding nebula, [24]featured
   [25]here, holds a [26]complex tapestry of gas, [27]dark dust, stars
   still forming, and newly born [28]stars. The intricate patterns are
   caused by [29]complex interactions between [30]interstellar winds,
   [31]radiation pressures, [32]magnetic fields, and [33]gravity. The
   image was taken with [34]DOE's [35]Dark Energy Camera on the 4-meter
   [36]Blanco Telescope at the [37]Cerro Tololo Inter-American Observatory
   in [38]Chile. NGC 6357 spans about 400 light years and lies about 8,000
   [39]light years away toward the constellation of the [40]Scorpion.

                        Tomorrow's picture: sun block
     __________________________________________________________________

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    Authors & editors: [52]Robert Nemiroff ([53]MTU) & [54]Jerry Bonnell
                                 ([55]UMCP)
          NASA Official: Phillip Newman [56]Specific rights apply.
              [57]NASA Web Privacy Policy and Important Notices
                A service of: [58]ASD at [59]NASA / [60]GSFC,
                         [61]NASA Science Activation
                           & [62]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2211/Lobster_Blanco_4000.jpg
   3. https://noirlab.edu/public/programs/ctio/
   4. https://noirlab.edu/
   5. https://www.energy.gov/
   6. https://www.nsf.gov/
   7. https://www.aura-astronomy.org/
   8. http://aftar.uaa.alaska.edu/
   9. https://www.uaa.alaska.edu/
  10. https://www.nsf.gov/
  11. https://noirlab.edu/
  12. https://www.gemini.edu/
  13. https://www.nsf.gov/
  14. https://noirlab.edu/
  15. https://mahdizamani.com/about
  16. https://www.nsf.gov/
  17. https://noirlab.edu/
  18. https://ui.adsabs.harvard.edu/abs/2018PASJ...70S..41F/abstract
  19. https://apod.nasa.gov/apod/ap200830.html
  20. https://apod.nasa.gov/apod/ap180612.html
  21. https://apod.nasa.gov/apod/emission_nebulae.html
  22. http://hyperphysics.phy-astr.gsu.edu/hbase/Chemical/ionize.html
  23. https://en.wikipedia.org/wiki/Hydrogen
  24. https://noirlab.edu/public/images/noirlab2221a/
  25. https://noirlab.edu/public/news/noirlab2221/
  26. https://noirlab.edu/public/images/noirlab2221a/zoomable/
  27. https://apod.nasa.gov/apod/ap201122.html
  28. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  29. https://post.bark.co/wp-content/uploads/2014/06/toiletpaperdog.jpg
  30. https://asd.gsfc.nasa.gov/blueshift/index.php/2009/11/17/dust-in-the-interstellar-wind/
  31. https://en.wikipedia.org/wiki/Radiation_pressure
  32. https://en.wikipedia.org/wiki/Magnetic_field
  33. https://spaceplace.nasa.gov/what-is-gravity/en/
  34. https://www.energy.gov/
  35. https://noirlab.edu/public/programs/ctio/victor-blanco-4m-telescope/decam/
  36. https://noirlab.edu/public/programs/ctio/victor-blanco-4m-telescope/
  37. https://youtu.be/VECu2c3ZJcI?t=10
  38. https://en.wikipedia.org/wiki/Chile
  39. http://chandra.harvard.edu/photo/cosmic_distance.html
  40. https://chandra.harvard.edu/photo/constellations/scorpius.html
  41. https://apod.nasa.gov/apod/ap221031.html
  42. https://apod.nasa.gov/apod/archivepix.html
  43. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  44. https://apod.nasa.gov/apod/lib/aptree.html
  45. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  46. https://apod.nasa.gov/apod/calendar/allyears.html
  47. https://apod.nasa.gov/apod.rss
  48. https://apod.nasa.gov/apod/lib/edlinks.html
  49. https://apod.nasa.gov/apod/lib/about_apod.html
  50. http://asterisk.apod.com/discuss_apod.php?date=221101
  51. https://apod.nasa.gov/apod/ap221102.html
  52. http://www.phy.mtu.edu/faculty/Nemiroff.html
  53. http://www.phy.mtu.edu/
  54. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  55. http://www.astro.umd.edu/
  56. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  57. https://www.nasa.gov/about/highlights/HP_Privacy.html
  58. https://astrophysics.gsfc.nasa.gov/
  59. https://www.nasa.gov/
  60. https://www.nasa.gov/centers/goddard/
  61. https://science.nasa.gov/learners
  62. http://www.mtu.edu/