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 __________________________________________________________________ [9]< | [10]Archive | [11]Submissions | [12]Index | [13]Search | [14]Calendar | [15]RSS | [16]Education | [17]About APOD | [18]Discuss | [19]> __________________________________________________________________ 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/