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                        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 13
    [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.

                  Geminid Meteors over Xinglong Observatory
         Image Credit & Copyright: [3]Steed Yu and [4]NightChina.net

   Explanation: Where do Geminid meteors come from? In terms of location
   on the sky, as the [5]featured image composite beautifully
   demonstrates, the sand-sized bits of rock that create the streaks of
   the [6]Geminids meteor shower appear to [7]flow out from the
   [8]constellation of Gemini. In terms of parent body, [9]Solar System
   trajectories point to the asteroid [10]3200 Phaethon -- but this
   results in a [11]bit of a mystery since that unusual object appears
   [12]mostly dormant. Perhaps, [13]3200 Phaethon undergoes greater
   [14]dust-liberating events than [15]we know. Over 50 meteors including
   a [16]bright fireball were captured during the peak of the 2015
   Geminids Meteor Shower streaking above [17]Xinglong Observatory in
   [18]China. The [19]Geminids of [20]December are one of the most
   predictable and [21]active meteor showers. This year's [22]Geminids
   peak tonight and should be particularly good because, in part, the
   nearly [23]new Moon will only [24]rise toward dawn and so not brighten
   the sky.

                    Tomorrow's picture: human made meteor
     __________________________________________________________________

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    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/2012/GemindsXinglong_Steed_2000.jpg
   3. mailto:%20steedjoy%20@at@%20gmail%20.dot.%20com
   4. http://nightchina.net/
   5. http://nightchina.net/2015/12/20/%E5%8F%8C%E5%AD%90%E6%80%92%E5%87%BA%E5%89%91/
   6. https://en.wikipedia.org/wiki/Geminids
   7. https://apod.nasa.gov/apod/ap151217.html
   8. http://hawastsoc.org/deepsky/gem/index.html
   9. https://www.nasa.gov/topics/solarsystem/overview/index.html
  10. https://en.wikipedia.org/wiki/3200_Phaethon
  11. https://ui.adsabs.harvard.edu/abs/2010AJ....140.1519J/abstract
  12. https://i.ytimg.com/vi/DQB2GvEh7Jc/maxresdefault.jpg
  13. https://science.nasa.gov/science-news/science-at-nasa/2010/06dec_geminids/
  14. https://apod.nasa.gov/apod/ap151118.html
  15. https://ui.adsabs.harvard.edu/abs/2016MNRAS.456...78R/abstract
  16. https://apod.nasa.gov/apod/ap081125.html
  17. http://english.cas.cn/newsroom/mutimedia_news/201506/t20150623_149202.shtml
  18. https://en.wikipedia.org/wiki/China
  19. https://www.youtube.com/watch?v=sT3D6t8VT-k
  20. https://apod.nasa.gov/apod/ap141227.html
  21. https://www.nasa.gov/jpl/asteroids/best-meteor-showers
  22. https://www.amsmeteors.org/2020/12/viewing-the-geminid-meteor-shower-in-2020/
  23. https://www.almanac.com/new-moon
  24. https://www.timeanddate.com/moon/phases/
  25. https://apod.nasa.gov/apod/ap201212.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=201213
  35. https://apod.nasa.gov/apod/ap201214.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/