¿ 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 December 2 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Eye of Moon Image Credit & Copyright: [3]Zachery Cooley Explanation: Who's watching who? The [4]featured image of the [5]Moon through a gap in a wall of rock may appear like a [6]giant eye looking back at you. Although, in late October, it took only a single exposure to capture this visual double, it also took a lot of planning. The [7]photographic goal was achieved by precise timing -- needed for a nearly full moon to appear through the eye-shaped arch, by precise locating -- needed for the [8]angular size of the Moon to fit iconically inside the rock arch, and by good luck -- needed for a clear sky and for the entire [9]scheme to work. The seemingly coincidental juxtaposition was actually engineered with the help of three [10]smartphone apps. The pictured [11]sandstone arch, carved by erosion, is millions of years old and just one of thousands of [12]natural rock arches that have been found in [13]Arches National Park near [14]Moab, Utah, [15]USA. Contrastingly, the [16]pictured Moon can be found up in the sky from just about anywhere on [17]Earth, about half the time. Tomorrow's picture: open space __________________________________________________________________ [18]< | [19]Archive | [20]Submissions | [21]Index | [22]Search | [23]Calendar | [24]RSS | [25]Education | [26]About APOD | [27]Discuss | [28]> __________________________________________________________________ Authors & editors: [29]Robert Nemiroff ([30]MTU) & [31]Jerry Bonnell ([32]UMCP) NASA Official: Phillip Newman [33]Specific rights apply. [34]NASA Web Privacy Policy and Important Notices A service of: [35]ASD at [36]NASA / [37]GSFC & [38]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2012/MoonEye_Cooley_1350.jpg 3. https://www.instagram.com/zachcooleyphoto/?hl=en 4. https://www.instagram.com/p/CG--ug2n_pz/ 5. https://solarsystem.nasa.gov/moons/earths-moon/overview/ 6. https://apod.nasa.gov/apod/ap190922.html 7. https://www.dailymail.co.uk/news/article-8970433/Eye-sky-moon-looks-like-giant-eye-passes-rock-arch-Utah.html 8. http://www.1728.org/angsize.htm 9. https://media.tenor.com/images/36f46564a0d87a3fd19932a85fbee3f5/tenor.gif 10. https://skiesandscopes.com/astrophotography-apps/ 11. https://www.nps.gov/arch/learn/nature/geologicformations.htm 12. https://en.wikipedia.org/wiki/Arches_National_Park 13. https://youtu.be/cgkizvteN0M 14. https://en.wikipedia.org/wiki/Moab,_Utah 15. https://www.cia.gov/library/publications/the-world-factbook/geos/print_us.html 16. https://apod.nasa.gov/apod/ap160201.html 17. https://solarsystem.nasa.gov/planets/earth/overview/ 18. https://apod.nasa.gov/apod/ap201201.html 19. https://apod.nasa.gov/apod/archivepix.html 20. https://apod.nasa.gov/apod/lib/apsubmit2015.html 21. https://apod.nasa.gov/apod/lib/aptree.html 22. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 23. https://apod.nasa.gov/apod/calendar/allyears.html 24. https://apod.nasa.gov/apod.rss 25. https://apod.nasa.gov/apod/lib/edlinks.html 26. https://apod.nasa.gov/apod/lib/about_apod.html 27. http://asterisk.apod.com/discuss_apod.php?date=201202 28. https://apod.nasa.gov/apod/ap201203.html 29. http://www.phy.mtu.edu/faculty/Nemiroff.html 30. http://www.phy.mtu.edu/ 31. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 32. http://www.astro.umd.edu/ 33. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 34. https://www.nasa.gov/about/highlights/HP_Privacy.html 35. https://astrophysics.gsfc.nasa.gov/ 36. https://www.nasa.gov/ 37. https://www.nasa.gov/centers/goddard/ 38. http://www.mtu.edu/