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Topic: M87

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	APOD Search Results for "m87"
		M87 is much bigger than an average galaxy, appears near the center of a whole cluster of galaxies known as the Virgo Cluster, and shows an unusually high number of globular clusters.
		M87 is a giant elliptical galaxy residing only 50 million light-years away in the Virgo Cluster of Galaxies.
		M87 is much bigger than an average galaxy, appears at the center of a whole cluster of galaxies known as the Virgo Cluster, and shows a very high number of globular clusters.
	antwrp.gsfc.nasa.gov /cgi-bin/apod/apod_search?m87 (1709 words)

	M87 (Site not responding. Last check: )
		M87 is famous for two peculiar and perhaps unique features, a huge globular cluster system found on long exposures (as our image), and a spectacular jet which is better seen on short exposure photographs.
		M87 was also identified with the strong radio source Virgo A (for the brightest radio source in the constellation Virgo), by W. Baade and R. Minkowski in 1954.
		In the new Hubble Space Telescope views of M87 after the repair mission, the violent active nucleus of this galaxy could be glimpsed significantly closer, to reveal a massive dark object of about 2-3 billion solar masses, concentrated within the innermost sphere with a radius of 60 light years.
	www.intercom.net /user/shaffer/messier/m87.html (892 words)

	Messier Object 87
		M87 has been discovered and cataloged by Charles Messier on March 18, 1781 when he also cataloged 7 more nebulous objects in the same region, and actually are all member galaxies of the Virgo Cluster, as well as globular cluster M92.
		M87 was also identified with the strong radio source Virgo A (for the brightest radio source in the constellation Virgo), by W. Baade and R. Minkowski in 1954.
		In the new Hubble Space Telescope views of M87 after the repair mission, the violent active nucleus of this galaxy could be glimpsed significantly closer, to reveal a massive central object of about 2-3 billion solar masses, concentrated within the innermost sphere with a radius of 60 light years.
	www.seds.org /messier/m/m087.html (0 words)

	M87 (NGC 4486)
		M87 has a diameter of at least 120,000 light-years –; greater than that of the Milky Way’s disk.
		Images of the violent active nucleus of M87, taken with the Hubble Space Telescope, have revealed a central object of about 2 to 3 billion solar masses concentrated within a spherical region just 60 light-years across and surrounded by a rapidly rotating gaseous accretion disk.
		M87 was identified with the strong radio source Virgo A by Walter Baade and Rudolph Minkowski in 1954.
	www.daviddarling.info /encyclopedia/M/M87.html (367 words)

	Messier M87: Virgo A
		M87 is a giant elliptical galaxy, and a member of the Virgo cluster of galaxies.
		At the heart of the galaxy is a supermassive fl hole, with a spectacular jet (see HST image on the right) more than 500,000 light years in length, having a mass of around 3 billion Suns.
		In 1919 there was a supernova in M87, but this was not discovered until 1922.
	www.r-clarke.org.uk /messier/m87.htm (181 words)

	NationMaster - Encyclopedia: Virgo cluster (Site not responding. Last check: )
		The W cloud is a cloud cluster of galaxies approximately 25-30 megaparsecs distant.
		The cluster is an aggregrate of at least three separate subclumps centered on the galaxies M87, M86, and M49.
		A subcluster or subclump (or subgroup) is a term used in galactic astronomy to include a identifiable isolated grouping of galaxies within a cluster of galaxies, typically centered on a large dominant member.
	www.nationmaster.com /encyclopedia/Virgo-cluster (1137 words)

	HubbleSite - NewsCenter - NASA's Hubble Space Telescope Probes the Compact Nucleus of Galaxy M87 (01/16/1992) - Release ...
		M87 is at the center of a nearby cluster of galaxies in the constellation of Virgo, 52 million light- years distant, and contains more than 100 billion stars.
		The central density of stars in M87 is at least 300 times greater than expected for a normal giant elliptical galaxy, and over a thousand times denser than the distribution of stars in the neighborhood of our own Sun.
		Early in the life of M87 a "seed" fl hole may have formed in its nucleus from the merger of small fl holes created by the explosion of massive stars, or perhaps from the gravitational collapse of gas leftover from the formation of M87.
	www.hubblesite.org /newscenter/archive/releases/exotic/1992/01/text (851 words)

	M87 (Site not responding. Last check: )
		M87 is a giant elliptical galaxy near the center of the Virgo cluster of galaxies, some 16 Mpc distant.
		M87 is also known as NGC4486, 3C274, and as Virgo A (the strongest radio source in the constellation Virgo) It is one of the first galaxies discovered to have an optical "jet", which is visible faintly as it protrudes through the bright optical emission from the stars in the galaxy.
		M87 contains the nearest active galactic nucleus (AGN) in the northern sky, offering the possibility of studying an AGN at the highest linear resolution.
	cfa-www.harvard.edu /~reid/m87_may2000.html (352 words)

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