    APOD: 2017 August 15 - Stars, Gas, and Dust Battle in the Carina Nebula

                         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 August 15
                                      [2]
              Stars, Gas, and Dust Battle in the Carina Nebula
                Image Credit & Copyright: Bastien Foucher [3]

Explanation: Chaos reigns in the Carina Nebula where massive stars form and
die. Striking and detailed, this close-up [4]  of a portion of the famous
nebula is a combination of light emitted by hydrogen [5]  (shown in red) and
oxygen [6]  (shown in blue). Dramatic dark dust knots [7] and complex features
revealed are sculpted [8]  by the winds [9] and radiation of Carina's massive
and energetic star [10] s. One iconic feature of the Carina Nebula [11] is the
dark V-shaped dust lane [12] that occurs in the top half of the image. The
Carina Nebula [13]  spans about 200 light years [14] , lies about 7,500 light
years distant, and is visible with binoculars toward the southern
constellation of Carina [15] . In a billion years [16]  after the dust settles
-- or is destroyed, and the gas dissipates -- or gravitationally condenses
[17] , then only the stars will remain [18]  -- but not [19]  even the
brightest ones.

                 Tomorrow's picture: interplanetary dust [20]

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Site notes:
  [1] archivepix.html
  [2] image/1708/Carina_Foucher_2695.jpg
  [3] http://www.bastienfoucher.com/A-propos
  [4]
http://www.bastienfoucher.com/Astrophotographies/Nebuleuses-palette-Hubble/
i-nHnk4sX/A
  [5] https://en.wikipedia.org/wiki/H-alpha
  [6] https://en.wikipedia.org/wiki/Doubly_ionized_oxygen
  [7] ap141214.html
  [8] ap141008.html
  [9] http://astronomy.swin.edu.au/cosmos/S/stellar+winds
  [10] ap151227.html
  [11] https://en.wikipedia.org/wiki/Carina_Nebula
  [12] ap160323.html
  [13] ap090524.html
  [14]
https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/
how_long_is_a_light_year.htm
  [15] https://en.wikipedia.org/wiki/Carina_(constellation)
  [16] https://en.wikipedia.org/wiki/Timeline_of_the_far_future
  [17]
https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  [18] ap170620.html
  [19]
http://news.nationalgeographic.com/2016/10/
eta-carinae-stars-supernova-explosion-winds-space-science/
  [20] ap170816.html
  [21] ap170814.html
  [22] archivepix.html
  [23] lib/apsubmit2015.html
  [24] lib/aptree.html
  [25] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [26] calendar/allyears.html
  [27] /apod.rss
  [28] lib/edlinks.html
  [29] lib/about_apod.html
  [30] http://asterisk.apod.com/discuss_apod.php?date=170815
  [31] ap170816.html
  [32] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [33] http://www.phy.mtu.edu/
  [34] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [35] http://www.astro.umd.edu/
  [36] lib/about_apod.html#srapply
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  [41] http://www.mtu.edu/
