Subj : Daily APOD Report To : All From : Ben Ritchey Date : Fri Sep 21 2018 09:30:53 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 September 21 [2] Irregular Galaxy NGC 55 Image Credit & Copyright [3] : Martin Pugh [4] Explanation: Irregular galaxy NGC 55 is thought to be similar to the Large Magellanic Cloud (LMC). But while the LMC [5] is about 180,000 light-years away and is a well known satellite of our own Milky Way Galaxy, NGC 55 is more like 6 million light-years distant [6] and is a member of the Sculptor Galaxy Group [7] . Classified as an irregular galaxy [8] , in deep exposures [9] the LMC itself resembles a barred disk galaxy. Spanning about 50,000 light-years, NGC 55 is seen nearly edge-on though, presenting a flattened, narrow profile in contrast with our face-on view of the LMC. Just as large star forming regions create emission nebulae [10] in the LMC, NGC 55 is also seen to be [11] producing new stars. This highly detailed galaxy portrait [12] highlights a bright core crossed with dust clouds, telltale pinkish star forming regions, and young blue star clusters in NGC 55. Tomorrow's picture: equinox -1 ------------------------------------------------------------------------------- < [13] | Archive [14] | Submissions [15] | Index [16] | Search [17] | Calendar [18] | RSS [19] | Education [20] | About APOD [21] | Discuss [22] | > [23] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [24] (MTU [25] ) & Jerry Bonnell [26] (UMCP [27] ) NASA Official: Phillip Newman Specific rights apply [28] . NASA Web Privacy Policy and Important Notices [29] A service of: ASD [30] at NASA [31] / GSFC [32] & Michigan Tech. U. [33] ---------- Site notes: [1] archivepix.html [2] image/1809/NGC55_HaLRGBpugh.jpg [3] lib/about_apod.html#srapply [4] https://www.martinpughastrophotography.space/ [5] ap180516.html [6] http://www.kencroswell.com/NGC55Cepheids.html [7] http://www.atlasoftheuniverse.com/galgrps/ scl.html [8] http://www.le.ac.uk/ph/faulkes/web/ galaxies/r_ga_irregular.html [9] ap080409.html [10] ap080426.html [11] http://arxiv.org/abs/astro-ph/0501173 [12] https://www.martinpughastrophotography.space/ngc-55 [13] ap180920.html [14] archivepix.html [15] lib/apsubmit2015.html [16] lib/aptree.html [17] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [18] calendar/allyears.html [19] /apod.rss [20] lib/edlinks.html [21] lib/about_apod.html [22] http://asterisk.apod.com/discuss_apod.php?date=180921 [23] ap180922.html [24] http://www.phy.mtu.edu/faculty/Nemiroff.html [25] http://www.phy.mtu.edu/ [26] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [27] http://www.astro.umd.edu/ [28] lib/about_apod.html#srapply [29] https://www.nasa.gov/about/highlights/HP_Privacy.html [30] https://astrophysics.gsfc.nasa.gov/ [31] https://www.nasa.gov/ [32] https://www.nasa.gov/centers/goddard/ [33] http://www.mtu.edu/ --- Mystic BBS v1.12 A39 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .