Subj : Daily APOD Report To : All From : Ben Ritchey Date : Sun Jul 15 2018 10:18:10 APOD: 2018 July 15 - Rings Around the Ring Nebula 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 15 [2] Rings Around the Ring Nebula Image Credit: Hubble [3] , Large Binocular Telescope [4] , Subaru Telescope [5] ; Composition & Copyright: Robert Gendler [6] Explanation: There is much more to the familiar Ring Nebula (M57) [7] , however, than can be seen through a small telescope. The easily visible central ring [8] is about one light-year [9] across, but this remarkably deep exposure [10] - a collaborative effort combining data from three different large telescopes - explores [11] the looping filaments of glowing gas extending much farther from the nebula [12] 's central star. This remarkable composite image [13] includes narrowband hydrogen image, visible light emission, and infrared light [14] emission. Of course, in this well-studied example of a planetary nebula [15] , the glowing material does not come from planets. Instead, the gaseous shroud [16] represents outer layers [17] expelled from a dying, sun-like star. The Ring Nebula [18] is about 2,000 light-years away toward the musical constellation Lyra [19] . Open Science: Browse 1,700+ codes in the Astrophysics Source Code Library [20] Tomorrow's picture: cosmological neutrino [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/M57Ring_HubbleGendler_3000.jpg [3] http://hla.stsci.edu/ [4] http://www.lbto.org/ [5] http://www.naoj.org/NAOJ/activities.html [6] http://www.robgendlerastropics.com/Biography2.html [7] http://en.wikipedia.org/wiki/Ring_nebula [8] http://antwrp.gsfc.nasa.gov/apod/image/0303/m57ring_hst_big.jpg [9] http://chandra.harvard.edu/photo/cosmic_distance.html [10] http://www.robgendlerastropics.com/M57-HST-LBT.html [11] http://arxiv.org/abs/astro-ph/0401056 [12] ap180417.html [13] http://www.robgendlerastropics.com/M57-HST-LBT.html [14] https://science.nasa.gov/ems/07_infraredwaves [15] http://www.noao.edu/jacoby/ [16] ap030614.html [17] https://www.youtube.com/watch?v=6FSIfUYFeTM [18] https://www.youtube.com/watch?v=OiYRL3HFULU [19] http://www.hawastsoc.org/deepsky/lyr/index.html [20] http://ascl.net/code/all [21] ap180716.html [22] ap180714.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=180715 [32] ap180716.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) .