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/