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 4
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                           Iridescent by Moonlight
            Image Credit & [3]Copyright: [4]Marcella Giulia Pace

   Explanation: [5]In this snapshot from November 18, the Full Moon was
   not far [6]from Earth's shadow. In skies over Sicily the brightest
   [7]lunar phase was eclipsed by passing clouds though. The full
   moonlight was dimmed and momentarily diffracted by small but similar
   sized water droplets near the edges of the high thin clouds. The
   resulting [8]iridescence shines with colors like a [9]lunar corona. On
   that night, the Full Moon was also seen close to the Pleiades star
   cluster appearing at the lower left of the iridescent cloud bank. The
   stars of the [10]Seven Sisters were soon to [11]share the sky with a
   darker, reddened lunar disk.

                      Tomorrow's picture: comet by eye
     __________________________________________________________________

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    Authors & editors: [23]Robert Nemiroff ([24]MTU) & [25]Jerry Bonnell
                                 ([26]UMCP)
          NASA Official: Phillip Newman [27]Specific rights apply.
              [28]NASA Web Privacy Policy and Important Notices
                A service of: [29]ASD at [30]NASA / [31]GSFC
                           & [32]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2112/IridescenzaLunaPleiadi.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://greenflash.photo/about-me/
   5. https://www.facebook.com/APOD.Sky/photos/a.231356626968564/4200590146711839/?type=3&theater
   6. https://apod.nasa.gov/apod/ap211125.html
   7. https://svs.gsfc.nasa.gov/4874
   8. https://www.atoptics.co.uk/droplets/irid1.htm
   9. https://apod.nasa.gov/apod/ap211126.html
  10. https://apod.nasa.gov/apod/ap211124.html
  11. https://apod.nasa.gov/apod/ap211120.html
  12. https://apod.nasa.gov/apod/ap211203.html
  13. https://apod.nasa.gov/apod/archivepix.html
  14. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  15. https://apod.nasa.gov/apod/lib/aptree.html
  16. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  17. https://apod.nasa.gov/apod/calendar/allyears.html
  18. https://apod.nasa.gov/apod.rss
  19. https://apod.nasa.gov/apod/lib/edlinks.html
  20. https://apod.nasa.gov/apod/lib/about_apod.html
  21. http://asterisk.apod.com/discuss_apod.php?date=211204
  22. https://apod.nasa.gov/apod/ap211205.html
  23. http://www.phy.mtu.edu/faculty/Nemiroff.html
  24. http://www.phy.mtu.edu/
  25. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  26. http://www.astro.umd.edu/
  27. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  28. https://www.nasa.gov/about/highlights/HP_Privacy.html
  29. https://astrophysics.gsfc.nasa.gov/
  30. https://www.nasa.gov/
  31. https://www.nasa.gov/centers/goddard/
  32. http://www.mtu.edu/