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	Open clusters - NGC objects 4755, 265, 290 & 6231
		This cluster was discovered by Nicolas Louis de Lacaille from an observing station in South Africa during his stay there from 1751 to 1752.
		Kappa Crucis is a large and luminous aging supergiant orange star easily distinguishable against its sapphire colored companions.
		They are both bright (12 magnitude) compact open clusters located in the Small Magellanic Cloud spanning a distance of 65 light years across and located 200,000 light years in distance from the Blue Planet in the Constellation Tucana.
	www.astronomytoday.com /astronomy/open-clusters.html (526 words)

	Jewel Box (NGC 4755)
		An open cluster of about 100 stars in the constellation Crux, also known as the Kappa Crucis Cluster after its most prominent member, a blue supergiant (visual magnitude 5.89, absolute magnitude -6.10, spectral type B5Ia).
		Located near Beta Crucis, the Jewel Box was discovered by Nicolas Lacaille when he was in South Africa in 1751-52.
		It is one of the youngest clusters known with an estimated age of less than 10 million years.
	www.daviddarling.info /encyclopedia/J/Jewel_Box.html (143 words)

	Star Clusters
		The ages of clusters are estimated by measuring the brightness and color/temperature of the individual stars, and using the results to plot a Hertzsprung-Russell Diagram.
		If such clusters were, like open clusters, found in the disk of the galaxy, and contained only a few thousands or tens of thousands of stars, they would have been tidally disrupted and torn apart by stars passing through them, billions of years ago.
		Small clusters such as NGC 4755 fall to pieces as they move through the galaxy, and other stars pass between the cluster stars, disturbing their motion relative to each other, over periods of just a few tens of millions of years.
	cseligman.com /text/stars/starclusters.htm (1494 words)

	Jewel Box - Wikipedia, the free encyclopedia
		The Jewel Box (also known as Open Cluster NGC 4755, NGC 4755, Kappa Crucis, or the Kappa Crucis Cluster) is an open cluster in the Crux constellation.
		As Kappa Crucis, it has a Bayer designation despite the fact that it is a cluster rather than an individual star.
		The bright orange star is kappa Crucis, and it contrasts strongly against its predominantly blue, hot companions.
	en.wikipedia.org /wiki/Kappa_Crucis_Cluster (369 words)

	Crux: Southern Cross Constellation, with pointers.
		Kappa Crucis, to the left (east) of Beta Crucis is not a single star.
		It is a star cluster, but at the scale of the main photograph the cluster cannot be resolved.
		Kappa Crucis is one of the more beautiful of the star clusters available for amateur telescopes, since it has a red star sitting among many blue stars.
	nzphoto.tripod.com /astro/asoutherncross.htm (1421 words)

	Wikipedia: Crux
		The Coalsack Nebula is the most prominent dark nebula in the skies, well visible to the naked eye as big dark patch in the southern Milky Way.
		Better known as Jewel Box or Kappa Crucis Cluster, it was discovered by Nicolas Louis de Lacaille in 1751-1752.
		The five brightest stars of Crux (α, β, γ, δ and ε Crucis) appear on the flags of Australia, Brazil, New Zealand, Papua New Guinea and Samoa, except that the New Zealand flag omits Epsilon.
	www.factbook.org /wikipedia/en/c/cr/crux.html (365 words)

	The open cluster NGC 4755 (Site not responding. Last check: 2007-11-02)
		The bright orange star is kappa Crucis, and it contrasts strongly against its predominantly blue, hot companions.
		Kappa Cru is a very large, (hence very luminous) quite young star in its red supergiant stage, which paradoxically indicates that its life is drawing to a close.
		The cluster is looks like a star to the unaided eye and appears close to the eastern-most star of the Southern Cross, so is only visible from southern latitudes.
	www.aao.gov.au /images/captions/aat025.html (166 words)

	Crux
		Beta Crucis (Mimosa) is the brightest star of the group, a blue-white giant (nearly five times the Sun's size) with a visual magnitude of 1.25.
		Also called the Kappa Crucis star cluster, this open cluster is composed of over a hundred stars, about fifty of which are a mixture of colourful supergiants: reds and blues intermingled with yellows and whites in a profusion of sparkling light.
		The cluster is considered to be from 6800 to 7800 light years away.
	www.troop54.com /resources/constellations/Crux.htm (890 words)

	Crux: Southern Cross Constellation, with pointers.
		Kappa Crucis, to the left (east) of Beta Crucis is not a single star.
		It is a star cluster, but at the scale of the main photograph the cluster cannot be resolved.
		Kappa Crucis is one of the more beautiful of the star clusters available for amateur telescopes, since it has a red star sitting among many blue stars.
	www.kiwizone.org /astro/asoutherncross.htm (1438 words)

	STAR CLUSTERS IN OUR GALAXY
		One of the oldest known open clusters with a approximate age of over 5 billion years, the Praesepe M44”(W11) group of stars in Cancer with a apparent” magnitude of 3.7”(CD1) and in the southern hemisphere Jewel Box (NGC4755) with a apparent” magnitude 4.2 surrounding Kappa Crucis.
		Open clusters are physically related groups of star held together by mutual gravitational attraction originating in the cosmic clouds the stars in open clusters may begin to form almost simultaneously but may not become main sequence stars at the same time.
		Globular cluster are stark difference, the stars gravity bound concentrations of tens of thousands to one million stars slightly flattened spheroid volume with of 12 to 20 billion years with a spectral type of F, G being pour in heavy elements
	maguires.com /astronomy/star_clusters.htm (1757 words)

	First Image of the Jewel Box Cluster by HiRISE (Site not responding. Last check: 2007-11-02)
		This image of part of the Jewel Box, an open star cluster, was acquired by the HiRISE camera, an instrument on the Mars Reconnaissance Orbiter, on December 14, 2005 as part of a calibration sequence while en route to the Red Planet.
		The Jewel Box was so named by Sir John Herschel because of the variety of star colors in the cluster, including the large red giant star seen near the bottom of this image.
		This cluster lies about 7,500 light years away, so the light we see today left the stars in the Neolithic Ages of Earth, when farming was first being practiced by our ancestors.
	hiroc.lpl.arizona.edu /cruise/jewelbox (250 words)

	Melbourne Planetarium: Crux-Centaurus Sky Tour (Site not responding. Last check: 2007-11-02)
		Close to Beta Crucis is Kappa Crucis, a beautiful galactic cluster of stars commonly known as the Jewel Box.
		It is one of the youngest clusters, perhaps only a few million years old.
		Kappa Crucis lies on the edge of a dark area of sky called the Coal Sack.
	www.museum.vic.gov.au /PLANETARIUM/constellations/crux1.html (276 words)

	Net4TV Voice: Astronomy: Southern Cross
		Beta Crucis (Mimosa) is the brightest star of the group, a blue-white giant (nearly five times the Sun's size).
		Delta Crucis is the western arm, very similar in size and distance to alpha Crucis.
		The best known are The Jewel Box (NGC 4755) aka the Kappa Crucis star cluster is composed of over a hundred stars, about fifty of which are a mixture of colorful supergiants: reds and blues intermingled with yellows and whites in a profusion of sparkling light.
	www.net4tv.com /voice/story.cfm?storyid=3683 (535 words)

	Crux - Encyclopedia, History, Geography and Biography
		The Southern Cross is somewhat kite-shaped, and it has a fifth star (ε Crucis).
		Another deep sky object within Crux is the Open Cluster NGC 4755, better known as the Jewel Box or Kappa Crucis Cluster, that was discovered by Nicolas Louis de Lacaille in 1751-1752.
		It lies at a distance of about 7,500 light years and consists of approximately 100 stars spread across an area of about 20 light-years square.
	www.arikah.com /encyclopedia/Crux (895 words)

	Melbourne Planetarium: Crux-Centaurus Sky Tour (Site not responding. Last check: 2007-11-02)
		Close to Beta Crucis is Kappa Crucis, a beautiful galactic cluster of stars commonly known as the Jewel Box.
		It is one of the youngest clusters, perhaps only a few million years old.
		Kappa Crucis lies on the edge of a dark area of sky called the Coal Sack.
	www.mov.vic.gov.au /planetarium/constellations/crux1.html (276 words)

	Open Star Clusters (Site not responding. Last check: 2007-11-02)
		Open star clusters are groups of stars loosely bound together by their gravitational pull.
		Open star clusters are mainly found to exist on the spiral arms of the galaxy which would be along the strip of our sky known as the Milky Way.
		This open star cluster has an estimated age of 100 million years, but only has an expected future lifetime as a cluster of about another 250 million years.
	1scom.net /~kjblackford/openstar.html (419 words)

	The Jewel Box - TheJewelBox
		The Jewel Box (also known as Open Cluster NGC 4755, NGC 4755, Kappa Crucis, or the Kappa Crucis Cluster) is an open cluster in the Crux constellation.
		As Kappa Crucis, it has a Bayer designation despite the fact that it is a cluster rather than an individual star.
		This cluster is one of the youngest known, with an estimated age of only 7.1 million years.
	www.kopete.org /The-Jewel-Box.html (118 words)

	Crux
		Beta Crucis (Mimosa) is the brightest star of the group, a blue-white giant (nearly five times the Sun's size) with a visual magnitude of 1.25.
		Also called the Kappa Crucis star cluster, this open cluster is composed of over a hundred stars, about fifty of which are a mixture of colourful supergiants: reds and blues intermingled with yellows and whites in a profusion of sparkling light.
		The cluster is considered to be from 6800 to 7800 light years away.
	www.dibonsmith.com /cru_con.htm (904 words)

	APOD Search Results for "cluster"
		A mere 3.4 billion light-years away, the bullet cluster's individual galaxies are seen in the optical image data, but their total mass adds up to far less than the mass of the cluster's two clouds of hot x-ray emitting gas shown in red.
		galaxies of the Hercules Cluster, an archipelago of
		Of course, the total cluster mass is the sum of the galaxies themselves, seen as ordinary luminous matter, plus the cluster's invisible dark matter whose nature remains unknown.
	antwrp.gsfc.nasa.gov /cgi-bin/apod/apod_search?cluster (10694 words)

	Famous Kappa Diamonds \| Diamonds (Site not responding. Last check: 2007-11-02)
		You are formally invited to join both the distinguished gentlemen of Kappa Alpha Psi Fraternity.
		Education with a concentration in piano and was a member of Kappa.
		At Cornell he was a member of Delta Kappa Epsilon fraternity and he worked.
	diamonds.mikesoftheworld.org /famous-kappa-diamonds.html (370 words)

	1024 pixel Southern Cross
		Even with elongation, the major open star clusters are easily made out as hazy patches, similar to how they look in binoculars, but the digital camera shows star colours much better than you can see in binoculars.
		The next image is the same, but with main stars and open clusters named.
		NGC4609 This is a good cluster for binoculars, sitting in the coal sack.
	nzphoto.tripod.com /astro/acrus1024.html (337 words)

	DOC: Uranometria chart 429
		It is described in the NGC as "brighter in the middle, 14th magnitude." Burnham calls this a 13th mag spiral galaxy in Centaurus, 1.0' x 0.9', small, faint and brighter in the middle.
		The cluster is in stark contrast to the nearby Jewelbox; although larger (about 50% greater diameter) it is not resolved; its many faint members combine to give it a mottled appearance.
		The cluster seems confined on the east and south by three 10th magnitude stars forming a right-angled triangle, with the right-angle oriented roughly south, and the hypotenuse measuring 9 arcmin.
	www.fortunecity.com /roswell/borley/49/u429.htm (2420 words)

	NGC 4755 (Kappa Crucis) (Site not responding. Last check: 2007-11-02)
		This cluster was one of the finest open clusters discovered by Abbe Lacaille when he was in South Africa during 1751-1752.
		This cluster is one of the youngest known, with an estimated age of only 7.1 million years (Sky Catalog 2000).
		Situated close to the cluster is a huge dark area of the sky, right within the band of the Milky Way: the Coal Sack.
	www.seds.org /messier/xtra/ngc/n4755.html (251 words)

	History of the Jewel Box - Part 1
		This well-known southern cluster was first described as the "hazy star" Kappa by Bayer in his Uranometria (1603).
		In the literature search for this article he was the first to refer to Kappa Crucis in 1903.
		Herschel found the cluster very conspicuous, noting with clear admiration the extent of the colours.
	www.geocities.com /ariane1au/Page002.htm (1299 words)

	YourArt.com >> Encyclopedia >> crux (Site not responding. Last check: 2007-11-02)
		If you use the Southern Cross to find south, be careful to distinguish it from the False Cross.
		The False Cross is diamond-shaped and does not have a fifth star like Îµ Crucis.
		It lies at a distance of about 7,500 light years and consists of approximately 100 stars spread across an area of about 20 light-years square.
	www.yourart.com /research/encyclopedia.cgi?subject=/crux (839 words)

	Mars Reconnaissance Orbiter: Multimedia
		Jewel Box was so named by Sir John Herschel because of the variety of star colors in the cluster, including the large red giant seen near the bottom of this image.
		Jewel Box, also called Kappa Crucis, is about 10 million years old, so it is much younger than our Sun at 4600 million years old.
		The Jewel Box cluster lies about 7,500 light years away, so the light we see today left the stars at the time of Earth's Neolithic ages, when farming was first being practiced.
	mars.jpl.nasa.gov /mro/gallery/cruise/jewel_box.html (198 words)

	Zoom Astronomy Glossary: C
		A cluster is a group of stars or galaxies.
		The globular cluster NGC 1851 and the blue magnitude 5 star (mu Col, a "runaway star") are in Columba.
		The Jewel Box (also known as Kappa Crucis) is an open cluster of about 100 stars in the Southern Cross.
	www.enchantedlearning.com /subjects/astronomy/glossary/indexc.shtml (5832 words)

	Crux Information - Online Prescription Medication Directory (Site not responding. Last check: 2007-11-02)
		The Southern Cross is somewhat kite-shaped, and it has a fifth star (e Crucis).
		The False Cross is diamond-shaped and does not have a fifth star like e Crucis.
		, d, and e Crucis) appear on the flags of Australia, Brazil, New Zealand (epsilon omitted), Papua New Guinea, and Samoa, and also the Australian States and Territories of Victoria, the Australian Capital Territory, the Northern Territory, as well as the flag of Magallanes Region of Chile, and several Argentine provincial flags and emblems.
	www.prescriptiondrug-info.com /drug_information_online.asp?title=Crux (1071 words)

	Crux - The real meaning from Timesharetalk wikipedia (Site not responding. Last check: 2007-11-02)
		The Southern Cross is somewhat kite-shaped, and it has a fifth star (e Crucis).
		The False Cross is diamond-shaped and does not have a fifth star like e Crucis.
		, d, and e Crucis) appear on the flags of Australia, Brazil, New Zealand (epsilon omitted), Papua New Guinea, and Samoa, and also the Australian States and Territories of Victoria, the Australian Capital Territory, the Northern Territory, as well as the flag of Magallanes Region of Chile, and several Argentine provincial flags and emblems.
	www.timesharetalk.co.uk /wiki.asp?k=Crux (951 words)

	[No title] (Site not responding. Last check: 2007-11-02)
		The blue colour represents the 164nm Uv band, the green is V and red is Halpha.
		All the bright stars in the cluster have masses greater than 12 solar masses and will eventually become type II supernovae like SN1987A.
		Study of these young massive clusters will provide details of the evolution of massive stars and the mass function likely to apply to star-burst galaxies.
	msowww.anu.edu.au /~bessell/thumbnails/images.txt (701 words)

	Beta Crucis (Site not responding. Last check: 2007-11-02)
		Beta Crucis, at a visual magnitude of 1.3, is nearly as bright as alpha.
		In the same region, southeast of beta, is the remarkable Jewel Box star cluster (NGC 4755), one of the finest in all the heavens: binoculars.
		The brightest member is kappa Crucis, and its distance of 7500 light years gives us a good idea of the distance of the cluster in general.
	www.dibonsmith.com /cru_b.htm (165 words)

	The Thinking Woman's Diary
		The fifth main star, Epsilon Crucis, is represented by the smallest star on the Australian flag.
		The Pointers, Alpha and Beta Centauri - which famously point in the direction of Gamma Crucis (the top of the cross) - are astronomical constants which helped ancient sailors and explorers to find Crux Australis.
		The Jewel Box, or the Kappa Crucis Star Cluster, is a brilliant open cluster of one hundred stars located just near Beta Crucis.
	www.thinkingwomansdiary.com /print.htm?section=nature&article=8 (607 words)

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