            APOD: 2017 September 13 - NGC 6334: The Cats Paw 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 September 13
                                      [2]
                        NGC 6334: The Cat's Paw Nebula
                Image Credit & Copyright: George Varouhakis [3]

Explanation: Nebulas are perhaps as famous for being identified with familiar
shapes as perhaps cats [4]  are for getting into trouble [5] . Still, no known
cat could have created the vast Cat's Paw Nebula [6]  visible in Scorpius [7]
. At 5,500 light years distant, Cat's Paw [8]  is an emission nebula [9]  with
a red color that originates from an abundance of ionized [10] hydrogen [11]
atoms. Alternatively known as the Bear Claw Nebula [12]  or NGC 6334 [13] ,
stars nearly ten times the mass of our Sun [14]  have been born there [15] in
only the past few million years. Pictured here [16]  is a deep field image of
the Cat's Paw [17] Nebula in light emitted by hydrogen, oxygen [18] , and
sulfur [19] .

                      Tomorrow's picture: open space [20]

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Site notes:
  [1] archivepix.html
  [2] image/1709/ngc6334_Varouhakis_1200.jpg
  [3] mailto: georgev @at@ pennoscan .dot. com .dot. au
  [4] http://www.nationalgeographic.com/cats/
  [5]
http://3.bp.blogspot.com/-1RxV7LEt7oY/Uzhk_V5RR7I/AAAAAAAAAOw/4FF6ICSxbmI/
s1600/cat+tp.jpeg
  [6] ap080304.html
  [7] http://www.youtube.com/watch?v=ni5LdzvLY7o
  [8] http://en.wikipedia.org/wiki/Paw
  [9] http://astronomy.swin.edu.au/cosmos/E/Emission+Nebula
  [10]
https://www.thunderbolts.info/wp/wp-content/uploads/2011/08/
ionization-image.jpg
  [11] http://periodic.lanl.gov/1.shtml
  [12] ap990406.html
  [13] http://en.wikipedia.org/wiki/NGC_6334
  [14] https://www.nasa.gov/sun
  [15] http://www.youtube.com/watch?v=r3kZZ6EeEMg
  [16] http://www.astrobin.com/99068/0/
  [17] http://www.youtube.com/watch?v=v0zgQAp7EYw
  [18] https://www.youtube.com/watch?v=MMB2VR0087w
  [19] https://en.wikipedia.org/wiki/Sulfur
  [20] ap170914.html
  [21] ap170912.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
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  [30] http://asterisk.apod.com/discuss_apod.php?date=170913
  [31] ap170914.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
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