Astronomy Picture of the Day

                         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.

                               2018 November 12
                                      [2]
                  The Lagoon Nebula is Stars, Gas, and Dust
                  Image Credit & Copyright: Nelson Ortega [3]

Explanation: The majestic Lagoon Nebula [4] is filled with hot gas and the
home for many young stars. Spanning 100 light years [5]  across while lying
only about 5000 light years distant, the Lagoon Nebula [6]  is so big and
bright that it can be seen [7]  without a telescope [8]  toward the
constellation [9]  of the Archer (Sagittarius [10] ). Many bright stars are
visible from NGC 6530 [11] , an open cluster [12]  that formed in the nebula
[13]  only several million years ago. The greater nebula, also known as M8
[14]  and NGC 6523 [15] , is named "Lagoon" for the band of dust seen to the
left of the open cluster's center. The featured image was taken in three
colors with details are brought out by light emitted by Hydrogen [16] Star
formation [17]  continues in the Lagoon Nebula [18]  as witnessed by the many
dark dust-laden globules [19]  that exist there.

                        Tomorrow's picture: blue cave

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    Authors & editors: Robert Nemiroff [31] (MTU [32] ) & Jerry Bonnell [33]
                                  (UMCP [34] )
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              A service of: ASD [37]  at NASA [38]  / GSFC [39]
                           & Michigan Tech. U. [40]
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Site notes:
  [1] archivepix.html
  [2] image/1811/Lagoon_Ortega_1844.jpg
  [3] mailto: nortega_serpr  yahoo .dot. com
  [4] http://en.wikipedia.org/wiki/Lagoon_Nebula
  [5] https://starchild.gsfc.nasa.gov/docs/StarChil...
  [6] ap021006.html
  [7]
https://www.commentsyard.com/wp-content/uploa...
All-Cats-Looking-Up-540x338.jpg
  [8] ap011014.html
  [9] http://www.comfychair.org/~cmbell/myth/myth.h...
  [10] https://en.wikipedia.org/wiki/Sagittarius_(co...
  [11] http://messier.seds.org/xtra/ngc/n6530.html
  [12] open_clusters.html
  [13] ap170521.html
  [14] ap010103.html
  [15] http://www.messier-objects.com/messier-8-lago...
  [16] http://periodic.lanl.gov/1.shtml
  [17]
http://science.nasa.gov/astrophysics/focus-ar...
  [18] ap130817.html
  [19] ap120612.html
  [20] ap181111.html
  [21] archivepix.html
  [22] lib/apsubmit2015.html
  [23] lib/aptree.html
  [24] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
  [25] calendar/allyears.html
  [26] /apod.rss
  [27] lib/edlinks.html
  [28] lib/about_apod.html
  [29] http://asterisk.apod.com/discuss_apod.php?dat...
  [30] ap181113.html
  [31] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [32] http://www.phy.mtu.edu/
  [33] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
  [34] http://www.astro.umd.edu/
  [35] lib/about_apod.html#srapply
  [36] https://www.nasa.gov/about/highlights/HP_Priv...
  [37] https://astrophysics.gsfc.nasa.gov/
  [38] https://www.nasa.gov/
  [39] https://www.nasa.gov/centers/goddard/
  [40] http://www.mtu.edu/

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