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 December 19
      [2]The featured image shows a glowing star forming region rich in
     glowing gas and dark dust. Two dusty pillars on the right resemble
     tadpoles. Please see the explanation for more detailed information.

                     The Tadpole Nebula in Gas and Dust
        Image Credit & Copyright: [3]Craig Stocks (Utah Desert Remote
                               Observatories)

   Explanation: What's causing the commotion in the Tadpole Nebula?
   [4]Star formation. Dusty emission in the [5]Tadpole Nebula, IC 410,
   lies about 12,000 [6]light-years away in the northern constellation of
   the [7]Charioteer ([8]Auriga). The cloud of glowing gas is over 100
   light-years across, [9]sculpted by [10]stellar winds and radiation from
   embedded [11]open star cluster [12]NGC 1893. Formed in the interstellar
   cloud [13]a mere 4 million years ago, bright newly formed cluster stars
   are seen all around the star-forming nebula. [14]Notable on the
   lower-right of the featured image are two relatively dense streamers of
   material trailing away from the nebula's central regions. Potentially
   sites of ongoing star formation in [15]IC 410, these [16]cosmic tadpole
   shapes are about 10 light-years long. The image was processed
   [17]highlighting the emission from sulfur (red), hydrogen (green), and
   oxygen (blue) gas -- but with the [18]stars digitally removed.

                        Tomorrow's picture: Big Thor
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    Authors & editors: [30]Robert Nemiroff ([31]MTU) & [32]Jerry Bonnell
                                 ([33]UMCP)
          NASA Official: Phillip Newman [34]Specific rights apply.
              [35]NASA Web Privacy Policy and Important Notices
                A service of: [36]ASD at [37]NASA / [38]GSFC,
                         [39]NASA Science Activation
                           & [40]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2212/Tadpoles_Stocks_2560.jpg
   3. https://craigstocksarts.com/resume.html
   4. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
   5. https://en.wikipedia.org/wiki/Tadpole
   6. https://spaceplace.nasa.gov/light-year/en/
   7. https://en.wikipedia.org/wiki/Chariot
   8. http://hawastsoc.org/deepsky/aur/index.html
   9. https://apod.nasa.gov/apod/ap050602.html
  10. https://apod.nasa.gov/apod/ap200121.html
  11. https://apod.nasa.gov/apod/open_clusters.html
  12. http://en.wikipedia.org/wiki/NGC_1893
  13. https://arxiv.org/abs/astro-ph/9909065v1
  14. https://www.seadna.ca/wp-content/uploads/2019/10/Hilariously-Surprised-Dogs-510x310.jpg
  15. http://it.wikipedia.org/wiki/IC_410
  16. https://apod.nasa.gov/apod/ap140109.html
  17. https://www.startools.org/modules/composite/usage/popular-coloring
  18. https://apod.nasa.gov/apod/ap221004.html
  19. https://apod.nasa.gov/apod/ap221218.html
  20. https://apod.nasa.gov/apod/archivepix.html
  21. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  22. https://apod.nasa.gov/apod/lib/aptree.html
  23. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  24. https://apod.nasa.gov/apod/calendar/allyears.html
  25. https://apod.nasa.gov/apod.rss
  26. https://apod.nasa.gov/apod/lib/edlinks.html
  27. https://apod.nasa.gov/apod/lib/about_apod.html
  28. http://asterisk.apod.com/discuss_apod.php?date=221219
  29. https://apod.nasa.gov/apod/ap221220.html
  30. http://www.phy.mtu.edu/faculty/Nemiroff.html
  31. http://www.phy.mtu.edu/
  32. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  33. http://www.astro.umd.edu/
  34. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  35. https://www.nasa.gov/about/highlights/HP_Privacy.html
  36. https://astrophysics.gsfc.nasa.gov/
  37. https://www.nasa.gov/
  38. https://www.nasa.gov/centers/goddard/
  39. https://science.nasa.gov/learners
  40. http://www.mtu.edu/