Subj : Daily APOD Report To : All From : Ben Ritchey Date : Wed Jul 25 2018 10:18:05 APOD: 2018 July 25 - The Edge On Spindle Galaxy 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 July 25 [2] The Edge-On Spindle Galaxy Image Credit & Copyright [3] : Adam Block [4] , Mt. Lemmon SkyCenter [5] , U. Arizona [6] Explanation: What kind of celestial object is this? A relatively normal galaxy -- but seen from its edge. Many disk galaxies are actually just as thin as NGC 5866, pictured here [7] , but are not seen edge-on [8] from our vantage point. A perhaps more familiar galaxy seen edge-on is our own Milky Way Galaxy [9] . Cataloged as M102 and NGC 5866, the Spindle galaxy [10] has numerous and complex dust lanes appearing dark and red, while many of the bright stars in the disk give it a more blue underlying hue. The blue disk of young stars [11] can be seen extending past the dust [12] in the extremely thin galactic plane. There is evidence that the Spindle [13] galaxy has cannibalized smaller galaxies over the past billion years or so, including multiple streams [14] of faint stars, dark dust that extends away from the main galactic plane, and a surrounding group [15] of galaxies (not shown). In general, many disk galaxies become thin [16] because the gas that forms them [17] collides with itself as it rotates about the gravitational center. The Spindle galaxy [18] lies about 50 million light years [19] distant toward the constellation of the Dragon (Draco [20] ). Tomorrow's picture: open space [21] ------------------------------------------------------------------------------- < [22] | Archive [23] | Submissions [24] | Index [25] | Search [26] | Calendar [27] | RSS [28] | Education [29] | About APOD [30] | Discuss [31] | > [32] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [33] (MTU [34] ) & Jerry Bonnell [35] (UMCP [36] ) NASA Official: Phillip Newman Specific rights apply [37] . NASA Web Privacy Policy and Important Notices [38] A service of: ASD [39] at NASA [40] / GSFC [41] & Michigan Tech. U. [42] ---------- Site notes: [1] archivepix.html [2] image/1807/NGC5866_Block_1518.jpg [3] lib/about_apod.html#srapply [4] http://adamblockphotos.com [5] http://skycenter.arizona.edu/ [6] http://www.as.arizona.edu/ [7] https://www.adamblockphotos.com/ngc-5866.html [8] ap010510.html [9] ap100530.html [10] https://en.wikipedia.org/wiki/NGC_5866 [11] https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve [12] ap990919.html [13] https://en.wikipedia.org/wiki/Spindle_(textiles)#/media/File:Drop_spindles.jpg [14] ap180206.html [15] https://en.wikipedia.org/wiki/NGC_5866_Group [16] ap120717.html [17] http://en.wikipedia.org/wiki/Galaxy_formation_and_evolution [18] ap160309.html [19] https://spaceplace.nasa.gov/light-year/en/ [20] http://www.ianridpath.com/startales/draco.htm [21] ap180726.html [22] ap180724.html [23] archivepix.html [24] lib/apsubmit2015.html [25] lib/aptree.html [26] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [27] calendar/allyears.html [28] /apod.rss [29] lib/edlinks.html [30] lib/about_apod.html [31] http://asterisk.apod.com/discuss_apod.php?date=180725 [32] ap180726.html [33] http://www.phy.mtu.edu/faculty/Nemiroff.html [34] http://www.phy.mtu.edu/ [35] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [36] http://www.astro.umd.edu/ [37] lib/about_apod.html#srapply [38] https://www.nasa.gov/about/highlights/HP_Privacy.html [39] https://astrophysics.gsfc.nasa.gov/ [40] https://www.nasa.gov/ [41] https://www.nasa.gov/centers/goddard/ [42] http://www.mtu.edu/ --- Mystic BBS v1.12 A39 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .