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.

                               2019 October 21

         IFRAME: [2]https://www.youtube.com/embed/AhWMOkrzKzs?rel=0

                   A Mercury Transit Music Video from SDO
      Video Credit: [3]NASA's [4]Goddard Space Flight Center, [5]Genna
              Duberstein; Music: [6]Encompass by [7]Mark Petrie

   Explanation: What's that small black dot moving across the Sun?
   [8]Mercury. Possibly the clearest view of [9]Mercury crossing in front
   of the Sun in 2016 May was from Earth orbit. The [10]Solar Dynamics
   Observatory obtained an uninterrupted vista [11]recording it not only
   in optical light but also in bands of ultraviolet light. [12]Featured
   here is a composite movie of the crossing set to music. Although the
   event might prove [13]successful scientifically for better determining
   components of Mercury' ultra-thin atmosphere, the event surely proved
   [14]successful culturally by involving [15]people throughout the world
   in observing a rare astronomical phenomenon. [16]Many spectacular
   images of this [17]Mercury transit from around (and above) the globe
   were [18]proudly [19]displayed. The next [20]transit of Mercury will
   take place in [21]three weeks: on 2019 November 11.

     Astrophysicists: [22]Browse 2,000+ codes in the Astrophysics Source
                                Code Library
                     Tomorrow's picture: sky mirror sky
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     __________________________________________________________________

    Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell
                                 ([37]UMCP)
          NASA Official: Phillip Newman [38]Specific rights apply.
              [39]NASA Web Privacy Policy and Important Notices
                A service of: [40]ASD at [41]NASA / [42]GSFC
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/AhWMOkrzKzs?rel=0
   3. https://www.nasa.gov/
   4. https://www.nasa.gov/goddard
   5. http://gennaduberstein.com/about/
   6. https://soundcloud.com/mark-22/encompass
   7. https://soundcloud.com/mark-22
   8. https://solarsystem.nasa.gov/planets/mercury/overview/
   9. https://apod.nasa.gov/apod/ap120605.html
  10. https://sdo.gsfc.nasa.gov/mission/
  11. http://svs.gsfc.nasa.gov/12235
  12. https://www.youtube.com/watch?v=8J4LoX3eOWc
  13. https://science.nasa.gov/2016-transit-mercury
  14. http://astronomerswithoutborders.org/gam2016-programs/observing/3163-transit-of-mercury.html
  15. https://apod.nasa.gov/apod/ap100725.html
  16. https://www.spaceweather.com/eclipses/gallery_08nov06.htm
  17. https://en.wikipedia.org/wiki/Transit_of_Mercury
  18. http://asterisk.apod.com/viewtopic.php?f=29&t=35887&start=36
  19. https://www.google.com/search?q=Mercury+Transit+2016&hl=en&authuser=0&biw=1254&bih=721&source=lnt&tbs=cdr:1,cd_min:5/9/2016,cd_max:5/10/2016&tbm=isch
  20. https://en.wikipedia.org/wiki/Transit_of_Mercury
  21. https://www.jpl.nasa.gov/edu/events/2019/11/11/watch-the-transit-of-mercury-2019/
  22. http://ascl.net/
  23. https://apod.nasa.gov/apod/ap191020.html
  24. https://apod.nasa.gov/apod/archivepix.html
  25. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  26. https://apod.nasa.gov/apod/lib/aptree.html
  27. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  28. https://apod.nasa.gov/apod/calendar/allyears.html
  29. https://apod.nasa.gov/apod.rss
  30. https://apod.nasa.gov/apod/lib/edlinks.html
  31. https://apod.nasa.gov/apod/lib/about_apod.html
  32. http://asterisk.apod.com/discuss_apod.php?date=191021
  33. https://apod.nasa.gov/apod/ap191022.html
  34. http://www.phy.mtu.edu/faculty/Nemiroff.html
  35. http://www.phy.mtu.edu/
  36. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  37. http://www.astro.umd.edu/
  38. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  39. https://www.nasa.gov/about/highlights/HP_Privacy.html
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. http://www.mtu.edu/