Subj : Daily APOD Report To : All From : Ben Ritchey Date : Thu May 09 2019 08:43:44 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. 2019 May 9 [2] Messier 5 Image Credit & Copyright [3] : Adam Block [4] , Mt. Lemmon SkyCenter [5] , University of Arizona [6] Explanation: "Beautiful Nebula discovered between the Balance [Libra] & the Serpent [Serpens] ..." begins the description of the 5th entry [7] in 18th century astronomer Charles Messier's famous catalog of nebulae and star clusters. Though it appeared to Messier [8] to be fuzzy and round and without stars, Messier 5 [9] (M5) is now known to be a globular star cluster, 100,000 stars or more, bound by gravity and packed into a region around 165 light-years in diameter. It lies some 25,000 light-years away. Roaming the halo of our galaxy [10] , globular star clusters are ancient members of the Milky Way. M5 is [11] one of the oldest globulars, its stars estimated to be nearly 13 billion years old. The beautiful star cluster is a popular target for earthbound telescopes [12] . Even close to its dense core [13] , the cluster's red and blue [14] giant stars, and rejuvenated [15] blue stragglers [16] stand out with yellowish and blue hues in this sharp color image [17] . Tomorrow's picture: Halley Dust and Milky Way ------------------------------------------------------------------------------- < [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/1905/m5sBlock.jpg [3] lib/about_apod.html#srapply [4] https://www.adamblockphotos.com/ [5] http://skycenter.arizona.edu/ [6] http://www.as.arizona.edu/ [7] http://messier.seds.org/Mdes/dm005.html [8] http://messier.seds.org/xtra/history/m-deep.html [9] http://messier.seds.org/m/m005.html [10] http://cass.ucsd.edu/archive/public/tutorial/MW.html [11] https://www.nasa.gov/feature/goddard/2017/messier-5 [12] http://earthsky.org/clusters-nebulae-galaxies/ m5-best-globular-cluster-for-small-telescopes [13] ap031213.html [14] ap010223.html [15] https://arxiv.org/abs/astro-ph/0605047 [16] https://www.spacetelescope.org/images/heic0918b/ [17] https://www.adamblockphotos.com/m5.html [18] ap190508.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=190509 [28] ap190510.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 A43 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .