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 10
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                           Eclipse on a Polar Day
              Image Credit & [3]Copyright: [4]Stephanie Ziyi Ye

   Explanation: [5]During polar day, in Arctic and Antarctic summer, the
   Sun stays above the horizon for periods of 24 hours or more. Recorded
   on December 4, this [6]fisheye timelapse image tracks the Sun in
   multiple frames as it completes a circle in the summer sky above Union
   Glacier, Antarctica. Of course on that date, [7]Union Glacier's sky did
   grow dark even though the Sun was above the horizon. Captured during
   the brief period of totality, [8]an eclipsed Sun is at bottom center of
   the composite view. Near the edge of the total eclipse path across
   planet Earth, [9]the Moon's shadow darkens [10]the sky above.

                      Tomorrow's picture: light-weekend
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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/Eclipseclock-final2.JPG
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.facebook.com/stephanieyeziyi/
   5. https://www.timeanddate.com/astronomy/midnight-sun.html
   6. https://www.facebook.com/stephanieyeziyi/photos/a.599207167208884/1289033798226214/?type=3&theater
   7. https://www.youtube.com/watch?v=K77Vm22oxi8
   8. https://apod.nasa.gov/apod/ap211209.html
   9. https://earthobservatory.nasa.gov/images/149174/antarctica-eclipsed
  10. https://apod.nasa.gov/apod/ap211205.html
  11. https://apod.nasa.gov/apod/ap211209.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=211210
  21. https://apod.nasa.gov/apod/ap211211.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/