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. 2025 March 20 [2]See Explanation. Clicking on the picture will download the highest resolution version available. The Solar Eclipse Analemma Project Image Credit & [3]Copyright: [4]Hunter Wells Explanation: Recorded from 2024 March 10, to 2025 March 1, this composited series of images [5]reveals a pattern in the seasonal drift of the Sun's daily motion through planet Earth's sky. Known to some as [6]an analemma, the figure-eight curve was captured in exposures taken on the indicated dates only at 18:38 UTC from the exact same [7]location south of Stephenville, Texas. The Sun's position on the 2024 [8]solstice dates of June 20 and December 21 would be at the top and bottom of the curve and correspond to the astronomical beginning of summer and winter in the north. Points that lie along the curve [9]half-way between the solstices would mark the equinoxes. The 2024 equinox on September 22, and in 2025 the [10]equinox on March 20 (today) are the start of northern fall and spring. And since one of the exposures was made on 2024 April 8 from the Stephenville location at 18:38:40 UTC, this analemma project also reveals the solar corona in planet Earth's sky during a [11]total solar eclipse. Tomorrow's picture: pixels in space __________________________________________________________________ [12]< | [13]Archive | [14]Submissions | [15]Index | [16]Search | [17]Calendar | [18]RSS | [19]Education | [20]About APOD | [21]Discuss | [22]> __________________________________________________________________ Authors & editors: [23]Robert Nemiroff ([24]MTU) & [25]Jerry Bonnell ([26]UMCP) NASA Official: Amber Straughn [27]Specific rights apply. [28]NASA Web Privacy Policy and Important Notices A service of: [29]ASD at [30]NASA / [31]GSFC, [32]NASA Science Activation & [33]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2503/HunterWells_submission3-3.png 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.youtube.com/watch?v=0tGkLhf2XGo 5. https://apod.nasa.gov/apod/ap241204.html 6. https://ui.adsabs.harvard.edu/abs/2013arXiv1302.0765H/abstract 7. https://www.youtube.com/watch?v=0tGkLhf2XGo 8. https://apod.nasa.gov/apod/ap241221.html 9. https://en.wikipedia.org/wiki/Analemma#/media/File:Analemma_Earth.png 10. https://apod.nasa.gov/apod/ap190320.html 11. https://science.nasa.gov/solar-system/skywatching/april-8-total-solar-eclipse-through-the-eyes-of-nasa/ 12. https://apod.nasa.gov/apod/ap250319.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=250320 22. https://apod.nasa.gov/apod/ap250321.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. https://science.nasa.gov/learners 33. http://www.mtu.edu/