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.

                               2021 January 21
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                               M78 Wide Field
                 Image Credit & [3]Copyright: [4]Wes Higgins

   Explanation: [5]Interstellar dust clouds and [6]glowing nebulae abound
   in the fertile [7]constellation of Orion. One of the [8]brightest, M78,
   is centered in this colorful, [9]wide field view, covering an area
   north of [10]Orion's belt. At a distance of about 1,500 light-years,
   the bluish reflection nebula is around 5 light-years across. Its tint
   is due to dust [11]preferentially reflecting the [12]blue light of hot,
   young stars. Reflection nebula NGC 2071 is [13]just to the left of M78.
   Flecks of emission from [14]Herbig-Haro objects, energetic jets from
   stars in the process of formation, stand out against the dark dust
   lanes. The exposure also brings out the region's fainter, pervasive
   reddish glow of atomic hydrogen gas.

                      Tomorrow's picture: in the round
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    Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell
                                 ([29]UMCP)
          NASA Official: Phillip Newman [30]Specific rights apply.
              [31]NASA Web Privacy Policy and Important Notices
                A service of: [32]ASD at [33]NASA / [34]GSFC
                           & [35]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2101/M78wideHiggins.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.astrobin.com/users/wes63/
   5. http://www-ssg.sr.unh.edu/ism/what1.html
   6. https://nasaviz.gsfc.nasa.gov/12086
   7. https://apod.nasa.gov/apod/ap161204.html
   8. http://www.messier.seds.org/m/m078.html
   9. https://www.astrobin.com/wj6sox/?nc=user
  10. https://apod.nasa.gov/apod/ap171123.html
  11. http://leo.astronomy.cz/mix/mix.html
  12. http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
  13. http://www.starpointing.com/ccd/m78_labeled.html
  14. https://en.wikipedia.org/wiki/Herbig%E2%80%93Haro_object#Discovery_and_history_of_observations
  15. https://apod.nasa.gov/apod/ap210120.html
  16. https://apod.nasa.gov/apod/archivepix.html
  17. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  18. https://apod.nasa.gov/apod/lib/aptree.html
  19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  20. https://apod.nasa.gov/apod/calendar/allyears.html
  21. https://apod.nasa.gov/apod.rss
  22. https://apod.nasa.gov/apod/lib/edlinks.html
  23. https://apod.nasa.gov/apod/lib/about_apod.html
  24. http://asterisk.apod.com/discuss_apod.php?date=210121
  25. https://apod.nasa.gov/apod/ap210122.html
  26. http://www.phy.mtu.edu/faculty/Nemiroff.html
  27. http://www.phy.mtu.edu/
  28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  29. http://www.astro.umd.edu/
  30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  31. https://www.nasa.gov/about/highlights/HP_Privacy.html
  32. https://astrophysics.gsfc.nasa.gov/
  33. https://www.nasa.gov/
  34. https://www.nasa.gov/centers/goddard/
  35. http://www.mtu.edu/