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 March 23
     [2]The featured image depicts the Bubble Nebula as captured by the
    Hubble Space Telescope. Please see the explanation for more detailed
                                information.

                        The Bubble Nebula from Hubble
      Image Credit: [3]NASA, [4]ESA, [5]Hubble; Processing & Copyright:
                          [6]Mehmet Hakan Özsaraç

   Explanation: Massive stars can blow bubbles. The featured image shows
   perhaps the most famous of all star-bubbles, NGC 7635, also known
   simply as [7]The Bubble Nebula. Although it looks delicate, the
   7-light-year diameter [8]bubble offers evidence of violent processes at
   work. Above and left of [9]the Bubble's center is a hot, [10]O-type
   star, several hundred thousand times more luminous and some 45-times
   more massive than the Sun. A fierce [11]stellar wind and intense
   radiation from that star has blasted out the [12]structure of glowing
   gas against denser material [13]in a surrounding [14]molecular cloud.
   The [15]intriguing Bubble Nebula and associated cloud complex lie a
   mere 7,100 [16]light-years away toward the boastful constellation
   [17]Cassiopeia. [18]This sharp, tantalizing view of the [19]cosmic
   bubble is a reprocessed composite of previously acquired [20]Hubble
   Space Telescope image data.

   Birthday 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]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2203/Bubble_HubbleOzsarac_1952.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/
   5. https://www.nasa.gov/mission_pages/hubble/main/index.html
   6. https://www.mhozsarac.com/ozgecmis
   7. https://hubblesite.org/contents/media/images/2016/13/3725-Image.html
   8. https://www.exploratorium.edu/ronh/bubbles/bubbles.html
   9. https://ui.adsabs.harvard.edu/abs/2002AJ....124.3313M/abstract
  10. https://en.wikipedia.org/wiki/O-type_star
  11. https://astronomy.swin.edu.au/cosmos/s/stellar+winds
  12. https://ui.adsabs.harvard.edu/abs/1995A&A...295..509C/abstract
  13. https://apod.nasa.gov/apod/ap210925.html
  14. https://en.wikipedia.org/wiki/Molecular_cloud
  15. https://i.imgur.com/xxPkvxt.jpeg
  16. https://spaceplace.nasa.gov/light-year/en/
  17. http://www.hawastsoc.org/deepsky/cas/index.html
  18. https://www.flickr.com/photos/mhozsarac/51838909434/in/dateposted-public/
  19. https://apod.nasa.gov/apod/ap170531.html
  20. http://heritage.stsci.edu/2016/13/fast_facts.html
  21. https://apod.nasa.gov/apod/calendar/allyears.html
  22. https://apod.nasa.gov/apod/ap220322.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=220323
  32. https://apod.nasa.gov/apod/ap220324.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. http://www.mtu.edu/