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 9
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                         A Total Eclipse of the Sun
    Image Credit & [3]Copyright: Theo Boris, Christian A. Lockwood, David
              Zimmerman ([4]JM Pasachoff Antarctic Expedition)
       Compositing: Zev Hoover and Ronald Dantowitz (MARS Scientific)

   Explanation: Few were able to stand in the [5]Moon's shadow and watch
   the [6]December 4 total eclipse of the Sun. [7]Determined by celestial
   mechanics and not geographical boundaries, the narrow path of totality
   tracked across planet Earth's relatively inaccessible southernmost
   continent. Still, some enthusiastic and well-insulated eclipse chasers
   were rewarded with the dazzling [8]spectacle in Antarctica's cold but
   clear skies. Taken just before the brief totality began, this image
   from a ground-based telescope inside the edge of the shadow path [9]at
   Union Glacier catches a glimmer of sunlight near the top of the
   silhouetted lunar disk. Look closely for the pinkish solar prominences
   arcing above the Sun's limb. During totality, the [10]magnificent solar
   corona, the Sun's outer atmosphere, made its much anticipated
   appearance, seen in the composite view streaming far from the Sun's
   edge.

                     Tomorrow's picture: pixels in space
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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/SOLARECLIPSE2021FORDISTROHighRes.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://sites.williams.edu/eclipse/2021-december-04-total-eclipse/
   5. https://twitter.com/NASA_Astronauts/status/1467235471440977928/photo/1
   6. https://www.youtube.com/watch?v=J04GFN2Pq1w
   7. https://www.nasa.gov/content/dec-4-2021-eclipse
   8. https://www.youtube.com/watch?v=2eD-e-kXwiI
   9. https://www.youtube.com/watch?v=K77Vm22oxi8
  10. https://apod.nasa.gov/apod/ap210107.html
  11. https://apod.nasa.gov/apod/ap211208.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=211209
  21. https://apod.nasa.gov/apod/ap211210.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/