Subj : Daily APOD Report To : All From : Ben Ritchey Date : Mon Nov 05 2018 08:09:44 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 5 [2] IC 4592: The Blue Horsehead Reflection Nebula Image Credit & Copyright: Mario Cogo [3] Explanation: Do you see the horse's head? What you are seeing is not the famous Horsehead nebula [4] toward Orion [5] but rather a fainter nebula that only takes on a familiar form with deeper imaging. The main part of the here imaged [6] molecular cloud [7] complex is a reflection nebula [8] cataloged as IC 4592 [9] . Reflection nebulas are actually made up of very fine dust [10] that normally appears dark but can look quite blue when reflecting the light [11] of energetic nearby stars. In this case, the source of much of the reflected light is a star at the eye [12] of the horse [13] . That star is part of Nu Scorpii [14] , one of the brighter star systems toward the constellation of the Scorpion (Scorpius [15] ). A second reflection nebula [16] dubbed IC 4601 [17] is visible surrounding two stars to the right of the image center. Tomorrow's picture: california dreaming ------------------------------------------------------------------------------- < [18] | Archive [19] | Submissions [20] | Index [21] | Search [22] | Calendar [23] | RSS [24] | Education [25] | About APOD [26] | Discuss [27] | > [28] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [29] (MTU [30] ) & Jerry Bonnell [31] (UMCP [32] ) NASA Official: Phillip Newman Specific rights apply [33] . NASA Web Privacy Policy and Important Notices [34] A service of: ASD [35] at NASA [36] / GSFC [37] & Michigan Tech. U. [38] ---------- Site notes: [1] archivepix.html [2] image/1811/BlueHorseshead_Cogo_2560.jpg [3] http://www.galaxlux.com/Author.htm [4] ap121021.html [5] ap120909.html [6] http://www.galaxlux.com/IC%204592%20The%20Blue%20Horse%20Nebula.htm [7] ap120129.html [8] http://en.wikipedia.org/wiki/Reflection_nebula [9] http://en.wikipedia.org/wiki/IC_4592 [10] ap030706.html [11] https://science.nasa.gov/ems/09_visiblelight [12] http://www.youtube.com/watch?v=tw0VJ1K93PM [13] http://3.bp.blogspot.com/-DYPBo1QCnls/UBAUokUjOFI/AAAAAAAAAck/gSVevljIUUc/s640/ funnyface.jpg [14] http://en.wikipedia.org/wiki/Nu_Scorpii [15] https://en.wikipedia.org/wiki/Scorpius [16] reflection_nebulae.html [17] http://wise.ssl.berkeley.edu/gallery_ic4601.html [18] ap181104.html [19] archivepix.html [20] lib/apsubmit2015.html [21] lib/aptree.html [22] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [23] calendar/allyears.html [24] /apod.rss [25] lib/edlinks.html [26] lib/about_apod.html [27] http://asterisk.apod.com/discuss_apod.php?date=181105 [28] ap181106.html [29] http://www.phy.mtu.edu/faculty/Nemiroff.html [30] http://www.phy.mtu.edu/ [31] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [32] http://www.astro.umd.edu/ [33] lib/about_apod.html#srapply [34] https://www.nasa.gov/about/highlights/HP_Privacy.html [35] https://astrophysics.gsfc.nasa.gov/ [36] https://www.nasa.gov/ [37] https://www.nasa.gov/centers/goddard/ [38] http://www.mtu.edu/ --- Mystic BBS v1.12 A39 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .