﻿ 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 February 5 [2]See Explanation. Moving the cursor over the image will bring up an annotated version. Clicking on the image will bring up the highest resolution version available. Lunar Eclipse Perspectives Image Credit: [3]F. Pichardo, [4]G. Hogan, [5]P. Horálek, [6]F. Hemmerich, [7]S. Schraebler, [8]L. Hašpl, [9]R. Eder; Processing & Copyright : [10]Matipon Tangmatitham; [11]Text: [12]Matipon Tangmatitham ([13]NARIT) Explanation: Do we all see the same [14]Moon? Yes, but we all see it differently. One difference is the apparent location of the Moon against [15]background stars -- an effect known as [16]parallax. We humans use the parallax between our eyes to judge [17]depth. To see [18]lunar parallax, though, we need eyes placed at a much greater separations -- hundreds to thousands of kilometers apart. Another difference is that observers around the Earth all see a slightly different face of our spherical Moon -- an effect known as [19]libration. The featured image is a composite of many views across the Earth, as submitted to [20]APOD, of the [21]total lunar eclipse of 2019 January 21. These images are projected against the same background stars to illustrate both effects. The accurate superposition of these images was made possible by a serendipitous [22]meteorite impact on the Moon during the lunar eclipse, labeled here [23]L1-21J -- guaranteeing that these submitted images were all taken within a [24]split second. Tomorrow's picture: open space __________________________________________________________________ [25]< | [26]Archive | [27]Submissions | [28]Index | [29]Search | [30]Calendar | [31]RSS | [32]Education | [33]About APOD | [34]Discuss | [35]> __________________________________________________________________ Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell ([39]UMCP) NASA Official: Phillip Newman [40]Specific rights apply. [41]NASA Web Privacy Policy and Important Notices A service of: [42]ASD at [43]NASA / [44]GSFC & [45]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2002/LunarParallaxC_PonEtal_2048_annotated.jpg 3. https://www.instagram.com/fpichardoc/ 4. https://www.instagram.com/nagohdotcom/ 5. http://www.astronom.cz/horalek/?page_id=20 6. mailto: drhemmerich @at@ gmail .dot. com 7. mailto: schraebler @at@ gmx .dot. de 8. https://www.mychparfotek.cz/ 9. https://www.astrobin.com/users/Robsi/ 10. mailto: matipon @at@ gmail .dot. com 11. https://asterisk.apod.com/viewtopic.php?f=28&t=40229 12. https://www.facebook.com/matiponblog/ 13. http://narit.or.th/ 14. https://quickmap.lroc.asu.edu/ 15. https://www.space.com/30417-parallax.html 16. https://en.wikipedia.org/wiki/Parallax 17. https://en.wikipedia.org/wiki/Depth_perception 18. http://www.etwright.org/astro/moonpar.html 19. https://apod.nasa.gov/apod/ap120205.html 20. https://apod.nasa.gov/apod/ap150616.html 21. https://solarsystem.nasa.gov/moons/earths-moon/lunar-phases-and-eclipses/ 22. https://apod.nasa.gov/apod/ap190125.html 23. http://astronomia-udea.co/principal/es/content/¡impacto-en-la-luna 24. https://www.cs.usfca.edu/~srollins/courses/cs686-f08/web/notes/timesync.html 25. https://apod.nasa.gov/apod/ap200204.html 26. https://apod.nasa.gov/apod/archivepix.html 27. https://apod.nasa.gov/apod/lib/apsubmit2015.html 28. https://apod.nasa.gov/apod/lib/aptree.html 29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 30. https://apod.nasa.gov/apod/calendar/allyears.html 31. https://apod.nasa.gov/apod.rss 32. https://apod.nasa.gov/apod/lib/edlinks.html 33. https://apod.nasa.gov/apod/lib/about_apod.html 34. http://asterisk.apod.com/discuss_apod.php?date=200205 35. https://apod.nasa.gov/apod/ap200206.html 36. http://www.phy.mtu.edu/faculty/Nemiroff.html 37. http://www.phy.mtu.edu/ 38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 39. http://www.astro.umd.edu/ 40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 41. https://www.nasa.gov/about/highlights/HP_Privacy.html 42. https://astrophysics.gsfc.nasa.gov/ 43. https://www.nasa.gov/ 44. https://www.nasa.gov/centers/goddard/ 45. http://www.mtu.edu/