              APOD: 2017 October 30 - Orionid Meteors from Orion

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                                2017 October 30
                                      [2]
                          Orionid Meteors from Orion
                    Image Credit & Copyright: Lu Shupei [3]

Explanation: Meteors have been shooting out from the constellation of Orion.
This was expected, as October is the time of year for the Orionids Meteor
Shower [4] . Pictured here, over a dozen meteors were caught in successively
added exposures last weekend over Wulan Hada [5]  volcano in Inner Mongolia
[6] , China [7] . The featured image shows multiple meteor streaks [8] that
can all be connected to a single small region on the sky called the radiant
[9] , here visible just above and to the left of the belt of Orion [10] , The
Orionids [11] meteors started as sand sized bits expelled from Comet Halley
[12] during one of its trips to the inner Solar System [13] . Comet Halley
[14]  is actually responsible [15]  for two known meteor showers [16] , the
other known as the Eta Aquarids [17]  and visible [18]  every May. Next month,
the Leonids Meteor Shower [19] from Comet Tempel-Tuttle [20]  should also
result in some bright meteor streaks.

                  Free Download: The 2018 APOD Calendar [21]
                    Tomorrow's picture: dark matters [22]

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Site notes:
  [1] archivepix.html
  [2] image/1710/OrionidsOrion_LuShupei_1326.jpg
  [3] mailto: sigmalsp @at@ outlook .dot. com
  [4] https://solarsystem.nasa.gov/planets/meteors/orionids
  [5] http://www.panoramio.com/photo/125895905
  [6] https://en.wikipedia.org/wiki/Inner_Mongolia
  [7] https://en.wikipedia.org/wiki/China
  [8] ap031116.html
  [9] https://en.wikipedia.org/wiki/Radiant_(meteor_shower)
  [10] ap040304.html
  [11] http://en.wikipedia.org/wiki/Orionids
  [12] ap000805.html
  [13] https://solarsystem.nasa.gov/planets/solarsystem
  [14] ap100104.html
  [15]
https://i.pinimg.com/originals/c6/4e/eb/c64eebbd2ba11d1d42b4ccbab5a94646.jpg
  [16] http://www.amsmeteors.org/showers.html
  [17]
http://earthsky.org/astronomy-essentials/
everything-you-need-to-know-eta-aquarid-meteor-shower
  [18] ap140509.html
  [19] ap151115.html
  [20] ap021116.html
  [21] https://apod.nasa.gov/apod/fap/APOD_Calendar_2018_300dpi.pdf
  [22] ap171031.html
  [23] ap171029.html
  [24] archivepix.html
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  [33] ap171031.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
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