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 August 14
    [2]An oval nebula is seen in false color. The nebula appears blue in
      the center, orange and red around the rim, and orange and purple
   filaments extending to the edge of the frame. Stars are seen throughout
    the frame. Please see the explanation for more detailed information.

                          The Ring Nebula from Webb
    Credit: [3]NASA, [4]ESA, [5]CSA, [6]JWST; Processing: [7]Zi Yang Kong

   Explanation: The [8]Ring Nebula (M57), is more complicated than it
   appears through a small telescope. The easily visible [9]central ring
   is about one [10]light-year across, but this remarkable exposure by the
   [11]James Webb Space Telescope explores this popular nebula with a
   [12]deep exposure in [13]infrared light. Strings of gas, like eyelashes
   around a cosmic eye, [14]become evident around the Ring in this
   digitally enhanced featured image in assigned colors. These long
   filaments [15]may be caused by shadowing of knots of dense gas in the
   ring from energetic light emitted within. The Ring Nebula is an
   elongated [16]planetary nebula, a type of gas cloud created when a
   [17]Sun-like star evolves to [18]throw off its outer atmosphere to
   become a [19]white dwarf star. The central oval in the [20]Ring Nebula
   lies about 2,500 light-years away toward the musical [21]constellation
   Lyra.

                     Tomorrow's picture: triple iced sky
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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/2308/M57_JwstKong_4532.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/
   5. https://www.asc-csa.gc.ca/eng/
   6. https://webb.nasa.gov/
   7. mailto: johnsterkong at outlook dot com
   8. https://en.wikipedia.org/wiki/Ring_nebula
   9. https://apod.nasa.gov/apod/ap210815.html
  10. https://chandra.harvard.edu/photo/cosmic_distance.html
  11. https://webb.nasa.gov/content/about/index.html
  12. https://apod.nasa.gov/apod/ap210818.html
  13. https://science.nasa.gov/ems/07_infraredwaves
  14. https://www.spitzer.caltech.edu/image/ssc2005-07a-ring-beholds-a-delicate-flower
  15. https://youtu.be/6FSIfUYFeTM?t=60s
  16. https://astronomy.swin.edu.au/cosmos/p/Planetary+Nebulae
  17. https://apod.nasa.gov/apod/ap230611.html
  18. https://www.youtube.com/watch?v=6FSIfUYFeTM
  19. https://imagine.gsfc.nasa.gov/science/objects/dwarfs2.html
  20. https://www.youtube.com/watch?v=OiYRL3HFULU
  21. http://www.hawastsoc.org/deepsky/lyr/index.html
  22. https://apod.nasa.gov/apod/ap230813.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. https://asterisk.apod.com/discuss_apod.php?date=230814
  32. https://apod.nasa.gov/apod/ap230815.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/