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. 2022 September 24 [2]See Explanation. Clicking on the picture will download the highest resolution version available. September Sunrise Shadows Image Credit & [3]Copyright: [4]Donato Lioce Explanation: [5]The defining astronomical moment for this September's equinox was on Friday, September 23, 2022 at 01:03 UTC, when the Sun crossed the celestial equator moving south in its [6]yearly journey through planet Earth's sky. That marked the beginning of [7]fall for our fair planet in the northern hemisphere and spring in the southern hemisphere, when day and night are nearly equal around the globe. Of course, if you celebrate the [8]astronomical change of seasons by watching a sunrise you can also look for crepuscular rays. The shadows cast by clouds can have a dramatic appearance in the twilight sky during any sunrise or sunset. [9]Due to perspective, the parallel shadows will seem to point back to the rising Sun [10]and a place due east on your horizon near the equinox date. Taken on September 15, this sunrise sea and skyscape captured crepuscular rays in the sky and watery [11]specular reflections from the Mediterranean coast near the village of Petacciato, Italy. Tomorrow's picture: shadows of cosmic dust __________________________________________________________________ [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: 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]NASA Science Activation & [33]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2209/DSCF4968_PS_Lioce.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.instagram.com/donamour_photography/ 5. https://earthsky.org/astronomy-essentials/everything-you-need-to-know-september-equinox/ 6. https://apod.nasa.gov/apod/ap220918.html 7. https://www.timeanddate.com/calendar/autumnal-equinox.html 8. https://blogs.nasa.gov/Watch_the_Skies/2022/09/20/september-equinox-marks-the-start-of-fall-2022/ 9. https://atoptics.co.uk/atoptics/ray1.htm 10. https://apod.nasa.gov/apod/ap160922.html 11. https://www.scienceabc.com/nature/why-does-the-sun-reflect-off-seas-and-oceans.html 12. https://apod.nasa.gov/apod/ap220923.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=220924 22. https://apod.nasa.gov/apod/ap220925.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/