
	Where results make sense

Topic: Great Globular Cluster in Hercules

Related Topics

Hercules (constellation)

Arecibo message

Communication with Extraterrestrial Intelligence

Frank Drake

Binary numeral system

	Star cluster - Space Wiki
		Globular clusters are roughly spherical groups of anything between 10,000 and several million stars in a region about 10 to 30 light years across.
		Until recently, globular clusters were the cause of a great mystery in astronomy, as theories of stellar evolution gave ages for the oldest members of globular clusters that were greater than the estimated age of the universe.
		A few of the brightest globular clusters are visible to the naked eye, with the brightest, Omega Centauri, having been known since antiquity and catalogued as a star before the telescopic age.
	space.wikia.com /wiki/Star_cluster (1158 words)

	Images: Globular Cluster in Hercules 010701
		Contents: The Great Globular Star Cluster in the constellation of Hercules is the finest star cluster visible in the northern sky.
		The Great Cluster is found in the constellation of Hercules.
		The cluster is along the side of the trapezoid closer to Arcturus.
	www.calvin.edu /~lmolnar/calobs/m13.html (544 words)

	Star Clusters - Globular
		Globular clusters are not formed within the galaxy structure, but usually large numbers of them form a halo around the main galactic structure.
		Globular clusters usually require a larger telescope and higher magnification to observe to best effect, although the larger and closer ones can be spectacular in small instruments.
		Stellar concentration is average for a globular cluster and it is one of the metal-richest globulars.
	www.paulandliz.org /Star_Clusters/Globulars.htm (1914 words)

	NRC Transcripts of `Great Debate' Page
		The great age of these incoming pulses of radiant energy is, however, no disadvantage; in fact, their antiquity has been turned to good purpose in testing the speed of stellar evolution, in indicating the enormous ages of stars, in suggesting the vast extent of the universe in time as well as in space.
		Since the affiliation of the globular clusters with the galaxy is shown by their concentration to the plane of the Milky Way and their symmetrical arrangement with respect to it, it also follows that the galactic system of stars is as large as this subordinate part.
		Comparison of the stars of the globular clusters with the "average" star.- From a somewhat cursory study of the negatives of ten representative globular clusters I estimate the average apparent visual magnitude of all the stars in these clusters as in the neighborhood of the eighteenth.
	www.adkoprivnica.hr /zanimljivosti/velika_debata/cs_nrc.html (14309 words)

	APOD Index - Stars: Globular Clusters
		Of the over 200 globular star clusters that orbit the center of our Milky Way Galaxy, 47 Tucanae is the second brightest globular cluster (behind Omega Centauri).
		globular clusters were destroyed over the eons by repeated fateful encounters with each other or the Galactic center.
		Hercules, M13 is frequently one of the first steps beyond the ordinary visible to the casual sky gazer.
	orion.pta.edu.pl /apodmain/apod/globular_clusters.html (340 words)

	M13 - Globular Cluster in Hercules
		Globular clusters are gravitationally bound concentrations of stars, which form a nearly spherical system around our galaxy.
		The greatest of the globular star clusters, and one of the nearest to the Earth, is the magnificent Omega Centauri, some 17,000 light years distant and visible to the naked eye.
		The cluster is located in the "Keystone" of Hercules, about a third of the way along a line drawn from Eta to Zeta Herculis, and any optical aid will reveal it.
	www.nightskyinfo.com /archive/m13_globular_cluster (368 words)

	Hercules Globular Cluster (M13, NGC 6205)
		The most prominent globular cluster in the northern half of the sky.
		It lies in the constellation Hercules and was discovered by Edmond Halley in 1714, who noted that "it shows itself to the naked eye when the sky is serene and the Moon absent."
		In small telescopes, M13 appears as a misty patch, denser toward the center; in large scopes it's revealed as a nearly perfect sphere of stars.
	www.daviddarling.info /encyclopedia/H/Hercules_Globular_Cluster.html (190 words)

	Bob Gardner's "The Milky Way and Beyond" Planetarium Show: Globular Clusters (Site not responding. Last check: )
		Whereas open clusters lie in the galactic plane and contain dozens to hundreds of stars, the globular clusters mainly lie outside of the plane of the galaxy and contain tens of thousands to millions of stars.
		The most dramatic example of a globular cluster which is visible from our latitude is the Great Globular Cluster in Hercules (M13/NGC 6205).
		Hercules is not up this time of year, but will be visible in the late evening sky starting in April.
	www.etsu.edu /physics/plntrm/mwshow/globclus.htm (432 words)

	Distant cluster Hercules is big but dim night light \| The San Diego Union-Tribune
		Standing not far above the eastern horizon on late spring evenings is Hercules – or Heracles, as the ancient Greeks knew him – who represents the immortal strongman who performed eight heroic deeds as well as the 12 labors of Greek mythology.
		Hercules represents the fifth largest constellation in the sky.
		Imagine what a stargazer near the cluster's center might see overhead; the stars there would appear about 500 times more concentrated than in our own sky, and nighttime would be unlikely, if not impossible, there.
	www.signonsandiego.com /uniontrib/20040512/news_1c12star.html (402 words)

	Stars and Constellations > Globular Star Clusters (Site not responding. Last check: )
		A globular star cluster is a spherical accumulation from hundredthousand to several millions stars.
		The globular star cluster in Hercules M13, shown in the picture, is a typical representative of its class.
		At dark nights in the mountain one can detect this cluster as a blurred object even from naked eye, although is is as distant as 20'000 light-years.
	www.calsky.com /cs.cgi/Deep-Sky/3 (921 words)

	Globular Clusters (Site not responding. Last check: )
		The globular star cluster M4 in Scorpius is one of the largest and nearest objects of its type.
		A view of the globular cluster M13 in Hercules, the finest cluster of its type in the northern half of the sky and one of the most spectacular telescopic objects in the heavens.
		The globular star cluster M92 in Hercules is a rich, beautiful, globular cluster that would normally be considered a major show object.
	faculty.frostburg.edu /phys/latta/astronomy/globular.html (230 words)

	Bathsheba Grossman - Globular Cluster Crystal
		Among its other attractions, our galaxy is peppered with about 150 globular clusters: round concentrations of stars that have existed, without much change, since the Milky Way was young.
		This sculpture is a many-body simulation tuned to match the parameters of M13, the great globular cluster in the Hercules constellation.
		The Globular Cluster Crystal comes with clear rubber feet to avoid scratches on your desk or mantel.
	www.bathsheba.com /crystal/cluster (252 words)

	Virtual Science Center
		This cluster is about 25,000 light years distant and about 150 light years across.
		Globular clusters are among the oldest objects in the Universe, and made up of hundreds of thousands of very old stars—and near the center, the stars are packed together about 500 times more densely than in our Sun’s neighborhood of space!
		The Hercules cluster is believed to be at least 12 billion years old.
	www.chabotspace.org /vsc/observatory/nellie/astrophotos/captions/m13.asp (120 words)

	M13
		M13 (NGC 6205), the "Great Globular Cluster in Hercules", is the largest and maybe most often observed globular cluster in northern skies, one of the finest in the sky.
		In the telescope, the outer parts of the cluster are easy to resolve into hundreds of individual stars, which is quite a sight.
		Another interesting globular in Hercules is M92, also quite a showpiece in big telescopes and also easy to locate in 7x50 finderscopes as fuzzy star.
	astro.nightsky.at /Photo/GlobClu/M13_Newton.html (429 words)

	M 13
		M13, also called the `Great globular cluster in Hercules', is one of the most prominent and best known globulars of the Northern celestial hemisphere.
		It was discovered by Edmond Halley in 1714, who noted that `it shows itself to the naked eye when the sky is serene and the Moon absent.' According to Messier it is also reported in John Bevis' "English" Celestial Atlas.
		The membership of this star was confirmed by radial velocity measurement, and is strange for such an old cluster -possibly a captured field star.
	www.messiermarathon.com /new_page_19.htm (226 words)

	Messier 13 - Wikipedia, the free encyclopedia
		The Great Globular Cluster in Hercules (also known as the Hercules Globular Cluster, Messier Object 13, Messier 13, M13, or NGC 6205) is a globular cluster in the Hercules constellation at right ascension 16
		The Arecibo message of 1974 was transmitted toward this globular cluster.
		In author Dan Simmon's Hyperion Cantos the Hercules cluster is where Earth was secretly moved to after it was supposedly destroyed.
	en.wikipedia.org /wiki/Great_Globular_Cluster_in_Hercules (280 words)

	APOD: 2007 May 18 - M13: The Great Globular Cluster in Hercules
		Edmond Halley noted that M13 "shows itself to the naked eye when the sky is serene and the Moon absent." Of course, M13 is now modestly recognized as the Great Globular Cluster in Hercules, one of the brightest globular star clusters in the northern sky.
		At a distance of 25,000 light-years, the cluster stars crowd into a region 150 light-years in diameter, but approaching the cluster core upwards of 100 stars could be contained in a cube just 3 light-years on a side.
		Along with the cluster's dense core, the outer reaches of M13 are highlighted in this deep colour image.
	zuserver2.star.ucl.ac.uk /~apod/apod/ap070518.html (188 words)

	M-13, globular cluster
		The "Great Hercules Cluster"; galaxies NGC 6207 and IC 4617 are respectively 30' and 15' to the north-east.
		Globular Cluster M-13 is perhaps the best known deep sky object in the summer sky.
		However, recent observation and theory suggests that the blue giants in globular clusters are the result of the merging of two old stars, and are not recently formed young stars.
	www.kopernik.org /images/archive/m13.htm (353 words)

	M13text
		Arguably the most celebrated northern globular cluster, its several hundred thousand stars are crowded into a volume of space 145 light years across.
		The cluster members are almost all population II stars which are highly evolved low mass main sequence stars.
		Milky Way globular clusters are all uniformly old (10 to 12 billion years old).
	www.robgendlerastropics.com /M13text.html (317 words)

	GLOBULAR CLUSTERS HOMEPAGE - about M 13
		Age of this globular is estimated to some 14 billion years, theremore M 13 is peculiar in containing one young blue star.
		The membership of this star was confirmed by radial velocity measurement, and is strange for such an old cluster - apparently it was captured by gravity influence of the cluster.
		Beautiful, large and bright object in Hercules, one of the finest and the best known globular cluster, but not so nice as popular.
	natkobajic.netfirms.com /M013.html (311 words)

	Cosmic Voyage-The Online Resource for Amateur Astronomers (Site not responding. Last check: )
		NGC 6207 might not even be on the Herschel 400 observing list if not for its proximity to one of the most spectacular deep-sky objects in the northern sky.
		M13, the Great Globular Cluster in Hercules, is a true showpiece of the night sky and NGC 6207 is less than half-a-degree away.
		Once you've found the galaxy, slip in a lower magnification eyepiece, and see if both the galaxy and the great M13 are visible in the same field.
	hometown.aol.com /billferris/n6207.html (192 words)

	clusters gallery
		Above and to the right of M35 is the smaller and older open cluster NGC 2158 which is 10 times older than M35, and 5 times further away at about 16,000 LY.
		M13 Globular Cluster - imaged by Martin Whipp and Paul Buglass on May 5th 2005 with Martin's Mintron video camera, and Paul's Celestar 8 SCT telescope on an equatorial mount.
		M3 Globular Cluster - imaged by Martin Whipp and Paul Buglass on May 5th 2005 with Martin's Mintron video camera, and Paul's Celestar 8 SCT telescope on an equatorial mount.
	uk.geocities.com /paul.buglass2005@btinternet.com/yas_pages/clustersgal.htm (1044 words)

	M13 - Great Hercules Cluster
		: M13 is generally considered the finest globular cluster in the northern skies, mainly because it is visible to the naked eye in a well-known grouping of stars that sails high overhead in the summer sky.
		A relatively close globular (about the same distance of M5), the Great Hercules Cluster is pleasingly bright.
		The Visual description of the M13 Globular Cluster was writen by Steven James O'Meara in the book "The Messier Objects" by Stephen James O'Meara.
	www.dougsastro.net /astrophotos/messier/m13.htm (162 words)

	Astronomy Events Calendar - Lonewolf Online
		The famous great globular cluster in Hercules is bright enough to be seen with naked eye.
		A small bright globular cluster laying along the bottom of the teapot asterism in Sagittarius.
		Another globular cluster in Hercules, M92 is easy to find in binoculars appearing slightly dimmer and smaller than M13.
	lonewolf-online.net /astronomy/calendar/2008/9 (664 words)

	APOD: 2007 November 15 - M13: The Great Globular Cluster in Hercules
		A system of stars numbering in the hundreds of thousands, it is one of the brightest globular star clusters in the northern sky.
		At a distance of 25,000 light-years, the cluster stars crowd into a region 150 light-years in diameter, but approaching the cluster core over 100 stars would be contained in a cube just 3 light-years on a side.
		Among the distant background galaxies also visible, NGC 6207 is above and to the left of the Great Globular Cluster M13.
	antwrp.gsfc.nasa.gov /apod/ap071115.html (197 words)

	NCKAS Globular Clusters
		Globular cluster, extremely bright, very rich in stars, very gradually extremely compressed middle, stars of magnitude 11 and fainter; = M13.
		Globular cluster, bright, very large, round, gradually very much brighter middle, well resolved, stars of magnitude 10 to 15; = M10.
		Globular cluster, bright, very large, round, extremely rich in stars, very gradually much brighter middle, well resolved, stars of magnitude 15; = M14.
	www.nckas.org /globularclusters (997 words)

	Crystal Clear Skies
		Donald also dialed in M15, a globular cluster with a bright core in Pegasus.
		This cluster looks more like the concentrated clusters of fall and winter than the sparse open clusters of summer.
		With the open cluster of the Pleides peeping over the trees, our last views of the night were of the Milky Way with the unaided eye.
	www.mindspring.com /~jeffpo/crystal.htm (1088 words)

	M13 (Site not responding. Last check: )
		The stars in the center of the cluster are concentrated 500 times more densely than stars in our neck of the galaxy.
		Since Globulars are devoid of the dust and gas needed to create new stars, no new stars have been created in the cluster since their separation from the rest of the galaxy.
		All the stars in the cluster are as old as the Milky Way itself, about 14 billion years.
	www.kkessler.com /objects/M13.html (207 words)

Try your search on: Qwika (all wikis)