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

                         NGC 6822: Barnard's Galaxy
        Image Credit & [3]Copyright: [4]Dietmar Hager, [5]Eric Benson

   Explanation: [6]Grand spiral galaxies often seem to get all the glory,
   flaunting their young, bright, blue star clusters in beautiful,
   symmetric spiral arms. But small galaxies form stars too, like nearby
   NGC 6822, also known as [7]Barnard's Galaxy. Beyond the rich starfields
   in the constellation Sagittarius, NGC 6822 is a mere 1.5 million
   light-years away, a member of our [8]Local Group of galaxies. A dwarf
   irregular galaxy similar to the [9]Small Magellanic Cloud, NGC 6822 is
   about 7,000 light-years across. Brighter foreground stars in our Milky
   Way have a spiky appearance. Behind them, Barnard's Galaxy is seen to
   be filled with young blue stars and mottled with the telltale pinkish
   hydrogen glow of star forming [10]regions in this deep color composite
   image.

                    Tomorrow's picture: Queequeg's comet
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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Phillip Newman [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC
                           & [31]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2112/NGC6822LRGB.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.facebook.com/StargazerObservatory/
   5. http://www.faintgalaxy.com/
   6. https://apod.nasa.gov/apod/ap190629.html
   7. http://messier.seds.org/xtra/ngc/n6822.html
   8. http://www.atlasoftheuniverse.com/localgr.html
   9. https://www.nasa.gov/content/hubble-space-telescope-finds-source-of-magellanic-stream
  10. https://apod.nasa.gov/apod/ap211119.html
  11. https://apod.nasa.gov/apod/ap211201.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=211202
  21. https://apod.nasa.gov/apod/ap211203.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. http://www.mtu.edu/