                         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.

                                  2019 May 14
                                      [2]
                  Young Star Cluster Trumpler 14 from Hubble
 Image Credit: NASA [3] , ESA [4] , and J. Maz Apellniz [5] (IoAoA Spain [6]
              ); Acknowledgment: N. Smith [7] (U. Arizona [8] )

Explanation: Why does star cluster Trumpler 14 have so many bright stars?
Because it is so young. Many cluster stars have formed only in the past 5
million years and are so hot they emit detectable X-rays [9] . In older star
clusters, most stars [10]  this young have already died -- typically exploding
in a supernova [11]  -- leaving behind stars that are fainter and redder.
Trumpler 14 [12]  spans about 40 light years and lies about 9,000 light years
[13]  away on the edge of the famous Carina Nebula [14] . A discerning eye
[15]  can spot two unusual objects in this detailed 2006 image [16]  of
Trumpler 14 by the Hubble Space Telescope [17] . First, a dark cloud [18] just
left of center may be a planetary system trying to form before being destroyed
by the energetic winds [19]  of Trumpler 14 [20] 's massive stars. Second is
the arc [21] at the bottom left, which one hypothesis holds is the supersonic
shock wave [22] of a fast star ejected 100,000 years ago from a completely
different star cluster [23] .

                    Tomorrow's picture: pivotal drab galaxy

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    Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
                                  (UMCP [38] )
          NASA Official:  Phillip Newman Specific rights apply [39] .
              NASA Web Privacy Policy and Important Notices [40]
              A service of: ASD [41]  at NASA [42]  / GSFC [43]
                           & Michigan Tech. U. [44]
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Site notes:
  [1] arcfhivepix.html
  [2] image/1905/Trumpler14_Hubble_3906.jpg
  [3] https://www.nasa.gov/
  [4] https://www.spacetelescope.org/
  [5] http://heritage.stsci.edu/2000/01/bio/bio_primary.html
  [6] https://www.iaa.csic.es/
  [7] https://www.as.arizona.edu/people/faculty/nathan-smith
  [8] https://www.as.arizona.edu/
  [9] ap050902.html
  [10]
https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  [11] https://www.youtube.com/watch?v=hJPVuSNFxlY
  [12] https://en.wikipedia.org/wiki/Trumpler_14
  [13] https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html
  [14] ap170815.html
  [15]
https://previews.123rf.com/images/sinnawin/sinnawin1210/sinnawin121000013/
15822340-humorous-conceptual-image-of-a-nearsighted-cat-with-myopia-peering-at-
a-little-mouse-through-a-magni.jpg
  [16] http://hubblesite.org/image/3693/news
  [17] https://www.nasa.gov/mission_pages/hubble/main/index.html
  [18] ap171008.html
  [19] ap000318.html
  [20] https://www.flickr.com/photos/geckzilla/14922981167
  [21] http://adsabs.harvard.edu/abs/2013ApJ...769..139N
  [22] ap170408.html
  [23] https://en.wikipedia.org/wiki/Trumpler_16
  [24] ap190513.html
  [25] archivepix.html
  [26] lib/apsubmit2015.html
  [27] lib/aptree.html
  [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [29] calendar/allyears.html
  [30] /apod.rss
  [31] lib/edlinks.html
  [32] lib/about_apod.html
  [33] http://asterisk.apod.com/discuss_apod.php?date=190514
  [34] ap190515.html
  [35] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [36] http://www.phy.mtu.edu/
  [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [38] http://www.astro.umd.edu/
  [39] lib/about_apod.html#srapply
  [40] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [41] https://astrophysics.gsfc.nasa.gov/
  [42] https://www.nasa.gov/
  [43] https://www.nasa.gov/centers/goddard/
  [44] http://www.mtu.edu/
