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.

                               2020 January 24
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                               Into the Shadow
              Image Credit & [3]Copyright: [4]Laszlo Francsics

   Explanation: On January 21, 2019 moonwatchers on planet Earth saw a
   [5]total lunar eclipse. In 35 frames this composite image follows the
   Moon that night as it crossed into [6]Earth's dark umbral shadow. Taken
   3 minutes apart, they almost melt together in a continuous screen that
   captures the dark colors within the shadow itself and the northern
   curve of the shadow's edge. Sunlight scattered by the atmosphere into
   the shadow causes the lunar surface to appear reddened during totality
   (left), but close to the umbra's edge, the limb of the eclipsed Moon
   shows a [7]remarkable blue hue. The blue eclipsed moonlight originates
   as rays of sunlight pass through layers high in Earth's upper
   stratosphere, colored by ozone that scatters red light and transmits
   blue. The Moon's next crossing into Earth's umbral shadow, will be
   [8]on May 26, 2021.

                      Tomorrow's picture: light-weekend
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       [9]< | [10]Archive | [11]Submissions | [12]Index | [13]Search |
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    Authors & editors: [20]Robert Nemiroff ([21]MTU) & [22]Jerry Bonnell
                                 ([23]UMCP)
          NASA Official: Phillip Newman [24]Specific rights apply.
              [25]NASA Web Privacy Policy and Important Notices
                A service of: [26]ASD at [27]NASA / [28]GSFC
                           & [29]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2001/IntoTheShadow_apod.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. http://www.ptes.hu/
   5. https://solarsystem.nasa.gov/moons/earths-moon/lunar-phases-and-eclipses/
   6. https://apod.nasa.gov/apod/ap190126.html
   7. https://apod.nasa.gov/apod/ap151003.html
   8. https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2021May26T.pdf
   9. https://apod.nasa.gov/apod/ap200123.html
  10. https://apod.nasa.gov/apod/archivepix.html
  11. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  12. https://apod.nasa.gov/apod/lib/aptree.html
  13. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  14. https://apod.nasa.gov/apod/calendar/allyears.html
  15. https://apod.nasa.gov/apod.rss
  16. https://apod.nasa.gov/apod/lib/edlinks.html
  17. https://apod.nasa.gov/apod/lib/about_apod.html
  18. http://asterisk.apod.com/discuss_apod.php?date=200124
  19. https://apod.nasa.gov/apod/ap200125.html
  20. http://www.phy.mtu.edu/faculty/Nemiroff.html
  21. http://www.phy.mtu.edu/
  22. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  23. http://www.astro.umd.edu/
  24. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  25. https://www.nasa.gov/about/highlights/HP_Privacy.html
  26. https://astrophysics.gsfc.nasa.gov/
  27. https://www.nasa.gov/
  28. https://www.nasa.gov/centers/goddard/
  29. http://www.mtu.edu/