                  APOD: 2018 May 24 - The Gum Nebula Expanse

                         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 May 24
                                      [2]
                            The Gum Nebula Expanse
                Image Credit & Copyright [3] : John Gleason [4]

Explanation: Named for a cosmic cloud hunter, Australian astronomer Colin
Stanley Gum [5] (1924-1960), The Gum Nebula [6] is so large and close it is
actually hard to see. In fact [7] , we are only about 450 light-years from the
front edge and 1,500 light-years from the back edge of this interstellar
expanse of glowing hydrogen gas. Covered in this 40+ degree-wide [8]
monochrome mosaic of Hydrogen-alpha [9]  images, the faint emission region
stands out against the background of Milky Way stars. The complex [10] nebula
is thought to be a supernova remnant [11]  over a million years old, sprawling
across the Ship's [12] southern constellations Vela and Puppis. This
spectacular wide field view also explores [13] many objects embedded in The
Gum Nebula, including the younger Vela supernova remnant [14] .

                Tomorrow's picture: a gaggle of galaxies [15]

-------------------------------------------------------------------------------
< [16] | Archive [17] | Submissions [18] | Index [19] | Search [20] | Calendar
  [21] | RSS [22] | Education [23] | About APOD [24] | Discuss [25] | > [26]
-------------------------------------------------------------------------------

    Authors & editors: Robert Nemiroff [27] (MTU [28] ) & Jerry Bonnell [29]
                                  (UMCP [30] )
          NASA Official:  Phillip Newman Specific rights apply [31] .
              NASA Web Privacy Policy and Important Notices [32]
              A service of: ASD [33]  at NASA [34]  / GSFC [35]
                           & Michigan Tech. U. [36]
----------
Site notes:
  [1] archivepix.html
  [2] image/1805/GumExpanseGleason.jpg
  [3] lib/about_apod.html#srapply
  [4] https://www.astrobin.com/users/dvj/
  [5] http://galaxymap.org/drupal/node/33
  [6] http://galaxymap.org/drupal/node/74
  [7] ap020217.html
  [8] https://www.astrobin.com/346877/0/
  [9] ap051223.html
  [10] http://adsabs.harvard.edu/cgi-bin/
nph-bib_query?bibcode=1993A%26A...280..231S
  [11] http://chandra.harvard.edu/xray_sources/ supernovas.html
  [12] https://en.wikipedia.org/wiki/Argo_Navis
  [13] image/0908/Vela_50mm_HaRGB_f88l.jpg
  [14] ap080306.html
  [15] ap180525.html
  [16] ap180523.html
  [17] archivepix.html
  [18] lib/apsubmit2015.html
  [19] lib/aptree.html
  [20] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [21] calendar/allyears.html
  [22] /apod.rss
  [23] lib/edlinks.html
  [24] lib/about_apod.html
  [25] http://asterisk.apod.com/discuss_apod.php?date=180524
  [26] ap180525.html
  [27] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [28] http://www.phy.mtu.edu/
  [29] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [30] http://www.astro.umd.edu/
  [31] lib/about_apod.html#srapply
  [32] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [33] https://astrophysics.gsfc.nasa.gov/
  [34] https://www.nasa.gov/
  [35] https://www.nasa.gov/centers/goddard/
  [36] http://www.mtu.edu/
