Subj : Daily APOD Report To : All From : Ben Ritchey Date : Wed Apr 03 2019 11:19:35 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 April 3 [2] Wisps Surrounding the Horsehead Nebula Image Credit & Copyright: Mario Zauner [3] Explanation: The famous Horsehead Nebula in Orion is not alone. A deep exposure shows that the dark familiar shaped [4] indentation, visible just below center, is part of a vast complex [5] of absorbing dust [6] and glowing gas [7] . To bring out details of the Horse [8] head's pasture, an amateur astronomer used a backyard telescope in Austria [9] to accumulate and artistically combine 7.5 hours of images in the light of Hydrogen [10] (red), Oxygen [11] (green), and Sulfur [12] (blue). The resulting spectacular picture [13] details an intricate tapestry of gaseous wisps [14] and dust-laden filaments [15] that were created and sculpted [16] over eons by stellar winds [17] and ancient supernovas [18] . The Flame Nebula [19] is visible just to the left of the Horsehead, while the bright star on the upper left is Alnilam [20] , the central star in Orion's Belt [21] . The Horsehead Nebula [22] lies 1,500 light years [23] distant towards the constellation [24] of Orion [25] . Bounce around the Universe: Random APOD Generator [26] Tomorrow's picture: open space ------------------------------------------------------------------------------- < [27] | Archive [28] | Submissions [29] | Index [30] | Search [31] | Calendar [32] | RSS [33] | Education [34] | About APOD [35] | Discuss [36] | > [37] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [38] (MTU [39] ) & Jerry Bonnell [40] (UMCP [41] ) NASA Official: Phillip Newman Specific rights apply [42] . NASA Web Privacy Policy and Important Notices [43] A service of: ASD [44] at NASA [45] / GSFC [46] & Michigan Tech. U. [47] ---------- Site notes: [1] archivepix.html [2] image/1904/HorseheadFlame_Zauner_4404.jpg [3] https://www.astrobin.com/users/MarioZauner/ [4] ap171227.html [5] ap181014.html [6] http://en.wikipedia.org/wiki/Interstellar_dust [7] https://en.wikipedia.org/wiki/Emission_nebula [8] http://en.wikipedia.org/wiki/Horse [9] https://en.wikipedia.org/wiki/Austria [10] http://en.wikipedia.org/wiki/H_alpha [11] https://periodic.lanl.gov/8.shtml [12] https://periodic.lanl.gov/16.shtml [13] http://www.astrobin.com/395364/0/?nc=user [14] ap190318.html [15] ap161207.html [16] http://www.youtube.com/watch?v=-aX45GCZzVY [17] https://www.nasa.gov/mission_pages/WISE/multimedia/gallery/pia14103.html [18] http://heasarc.gsfc.nasa.gov/docs/snr.html [19] ap141209.html [20] ap161204.html [21] http://www.gb.nrao.edu/~rmaddale/Education/OrionTourCenter/belt.html [22] http://www.google.com/ search?hl=en&biw=1293&bih=977&q=horsehead+site:apod.nasa. gov&um=1&ie=UTF-8&tbm=isch [23] http://chandra.harvard.edu/photo/cosmic_distance.html [24] http://www.astro.wisc.edu/~dolan/constellations/extra/constellations.html [25] ap040304.html [26] http://apod.nasa.gov/apod/random_apod.html [27] ap190402.html [28] archivepix.html [29] lib/apsubmit2015.html [30] lib/aptree.html [31] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [32] calendar/allyears.html [33] /apod.rss [34] lib/edlinks.html [35] lib/about_apod.html [36] http://asterisk.apod.com/discuss_apod.php?date=190403 [37] ap190404.html [38] http://www.phy.mtu.edu/faculty/Nemiroff.html [39] http://www.phy.mtu.edu/ [40] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [41] http://www.astro.umd.edu/ [42] lib/about_apod.html#srapply [43] https://www.nasa.gov/about/highlights/HP_Privacy.html [44] https://astrophysics.gsfc.nasa.gov/ [45] https://www.nasa.gov/ [46] https://www.nasa.gov/centers/goddard/ [47] http://www.mtu.edu/ --- Mystic BBS v1.12 A43 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .