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	Reference.com/Encyclopedia/Aristarchus (crater)
		The Aristarchus crater is located on an elevated rocky rise, known as the Aristarchus plateau, in the midst of the Oceanus Procellarum, a large expanse of lunar mare.
		The Aristarchus crater region was part of a Hubble space telescope study in 2005 that was investigating the presence of oxygen-rich glassy soils in the form of the mineral ilmenite.
		The crater was determined to have especially rich concentrations of ilmenite, a titanium oxide mineral that could potentially be used in the future by a lunar settlement for extracting oxygen.
	www.reference.com /browse/wiki/Aristarchus_(crater) (945 words)

	Aristarchus (crater) - Wikipedia, the free encyclopedia
		Aristarchus is a prominent lunar impact crater that lies in the northwest part of the Moon's near side.
		The Aristarchus crater is located on an elevated rocky plateau, known as the Aristarchus plateau, in the midst of the Oceanus Procellarum lava plain.
		The Aristarchus crater region was part of a Hubble space telescope study in 2005 that was investigating the presence of oxygen-rich glassy soils in the form of the mineral ilmenite.
	en.wikipedia.org /wiki/Aristarchus_crater (678 words)

	Aristarchus (crater) -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-17)
		Aristarchus is a prominent (additional info and facts about lunar) lunar (additional info and facts about impact crater) impact crater that lies in the northwest part of the (Any natural satellite of a planet) Moon's near side.
		The Aristarchus crater is located on an elevated rocky plateau, known as the Aristarchus plateau, in the midst of the (additional info and facts about Oceanus Procellarum) Oceanus Procellarum lava plain.
		The reason for the crater's brightness is that it is a young formation, approximately 450 million years old, which means that the (A stream of protons moving radially from the sun) solar wind has not yet had time to darken the excavated material.
	www.absoluteastronomy.com /encyclopedia/a/ar/aristarchus_(crater).htm (715 words)

	Online Encyclopedia and Dictionary - Aristarchus (Site not responding. Last check: 2007-10-17)
		Aristarchus (310 BC - circa 230 BC) was a Greek astronomer and mathematician, born in Samos, Greece.
		Aristarchus thus believed the stars to be infinitely far away, and saw this as the reason why there was no visible parallax, that is, an observed movement of the stars relative to each other as the Earth moved around the Sun.
		Aristarchus argued that the Sun, Moon, and Earth form a near right triangle at the moment of first or last quarter moon.
	fact-archive.com /encyclopedia/Aristarchus (604 words)

	Aristarchus biography
		Aristarchus was certainly both a mathematician and astronomer and he is most celebrated as the first to propose a sun-centred universe.
		Aristarchus was a student of Strato of Lampsacus, who was head of Aristotle's Lyceum.
		In fact the way that Aristarchus expresses his proportions is, according to Heath, similar to other expressions which occur in Greek writings and indicated that Aristarchus considered that the radius of the sphere of the fixed stars was infinitely large compared with the orbit of the earth.
	www-history.mcs.st-andrews.ac.uk /Biographies/Aristarchus.html (1584 words)

	Aristarchus of Samos
		Aristarchus thus believed the stars to be infinitely far away, and saw this as the reason why there was no visible parallax, that is, an observed movement of the stars relative to each other as the Earth moved around the Sun.
		We are told that Aristarchus of Samos was a pupil of Strato of Lampsacus, a natural philosopher of originality, who succeeded Theophrastus as head of the Peripatetic school in 288 or 287 B.C., and held that position for eighteen years.
		Aristarchus said that colours are " shapes or forms stamping the air with impressions like themselves as it were," that " colours in darkness have no colouring," and that " light is the colour impinging on a substratum ".
	www.mlahanas.de /Greeks/Bios/AristarchusSamos.html (1820 words)

	The Moon
		The highlands are composed of a heavily cratered crust composed largely of anorthosite.
		The central peaks of large impact craters such as Copernicus may be composed of rocks that have been uplifted from deep in the crust.
		Aristarchus is situated on the Aristarchus Plateau, one of the youngest terrains on the moon.
	www.unm.edu /~abqtom/observing_the_moon.htm (2377 words)

	Gibbous 11.8 days
		Crater Tycho is near the southern end (bottom) of this image, and is the source of an extensicve ray pattern across much of the moon; crater Copernicus dominates the equatorial region in the middle Oceanus Procellarum (the dark mare region on the left side).
		Aristarchus is the crater with the bright rim on the terminator.
		Aristarchus is thought to be less than 50 million years old, making it one of the youngest craters known on the moon, and perhaps the brightest one (at full moon).
	reductionism.net.seanic.net /brucelgary/AstroPhotos/MoonPhases/11p8.htm (615 words)

	[No title] (Site not responding. Last check: 2007-10-17)
		The Lunar Crater Aristarchus with Schroter's Valley and the Cobra-Head
		The bright white crater in the lower left is Aristarchus with a diameter of 29 miles.
		Aristarchus is the crater Herodotus with a diameter of 23 miles.
	www.w7ftt.net /moon2.html (200 words)

	ch6.1
		The crater is 40 km in diameter, the pile of volcanic rocks is 100 km in diameter.
		Craters at the heads of rilles probably represent source vents for fluids that either eroded the rilles or formed lava tubes that drained, contributing to the volume of mare lava in Oceanus Procellarum.
		Ejecta from the young crater Aristarchus forms lightcolored streaks or "rays" across the dark mare surface; the high albedo of the rays may be due in large part to disruption of the surface by secondary craters.-C.A.H. FIGURE 192 [below].-A low Sun angle, larger scale view of part of the area shown in figure 191.
	www.hq.nasa.gov /office/pao/History/SP-362/ch6.1.htm (2684 words)

	Craters- The Moon
		Impact craters are the remains of collisions between an asteroid, comet, or meteorite and the Moon.
		These craters range in size up to many hundreds of kilometers, but the most enormous craters have been flooded by lava, and only parts of the outline are visible.
		Euler crater, a complex crater with a diameter of 17 miles (28 km) and a depth of 1.5 miles (2.5 km).
	www.enchantedlearning.com /subjects/astronomy/moon/Craters.shtml (731 words)

	ARISTARCHUS REGION
		The 42 km diameter crater and its ejecta are especially interesting because of its location on the uplifted southeastern corner of the Aristarchus plateau.
		As a result, the crater ejecta reveal two different stratigraphic sequences: that of the plateau to the northwest, and that of a portion of Oceanus Procellarum to the southeast.
		The subsurface compositions, buried beneath a few meters or tens of meters of pyroclastics or Aristarchus ejecta, are revealed by craters which penetrated the surface layers, and by steep slopes such as those along the walls of the rilles.
	www.ltpresearch.org /aristarchus4.htm (689 words)

	Astrophotography by Anthony Ayiomamitis
		Named after the ancient Greek astronomer Aristarchus of Samos, this crater is both an observer's delight and a photographer's nightmare.
		Crater Aristarchus is a relatively small crater with a diameter of only 40.0 km and, yet, is the brightest feature on the surface of the moon and is visible even during Earthshine.
		Aristarchus is also a very young crater, believed to be less than 500 million years old; is the center of various bright ray systems; the source of various reported lunar transient phenomenon; and lies in an area rich in color, three-dimensional features and possible volcanic activity.
	www.perseus.gr /Astro-Lunar-Crater-Aristarchus.htm (109 words)

	ARISTARCHUS REGION (Site not responding. Last check: 2007-10-17)
		The 42 km diameter crater and its ejecta are especially interesting because of its location on the uplifted southeastern corner of the Aristarchus plateau.
		As a result, the crater ejecta reveal two different stratigraphic sequences: that of the plateau to the northwest, and that of a portion of Oceanus Procellarum to the southeast.
		The subsurface compositions, buried beneath a few meters or tens of meters of pyroclastics or Aristarchus ejecta, are revealed by craters which penetrated the surface layers, and by steep slopes such as those along the walls of the rilles.
	www.lpi.usra.edu /resources/clemen/cmaris.html (681 words)

	Impact Cratering Experiments - Introduction
		It has nicely terraced walls and a small but noticeable central peak, both of which indicate that the present appearance of Aristarchus is due to modification of the original, bowl-shaped cavity that existed during the formation of the crater.
		These are called "secondary craters" and appear here as the complex clusters just to the left of the 6.7-km diameter Aristarchus C (the large crater to the right).
		These are called "secondary craters," and they're caused by pieces of ejecta that were traveling fast enough to make their own craters when they landed back on the Moon.
	exploration.jsc.nasa.gov /Education/websites/craters/intro1.htm (628 words)

	Aristarchus (crater) - Wikipedia, the free encyclopedia
		Aristarchus Lunar Transient Phenomenon History by David Darling.
		LPOD — Glorious Aristarchus by Charles A. Wood.
		This page was last modified 00:23, 16 November 2005.
	en.wikipedia.org /wiki/Aristarchus_(crater) (678 words)

	Impact Cratering Experiments - Introduction
		It has nicely terraced walls and a small but noticeable central peak, both of which indicate that the present appearance of Aristarchus is due to modification of the original, bowl-shaped cavity that existed during the formation of the crater.
		These are called "secondary craters" and appear here as the complex clusters just to the left of the 6.7-km diameter Aristarchus C (the large crater to the right).
		These are called "secondary craters," and they're caused by pieces of ejecta that were traveling fast enough to make their own craters when they landed back on the Moon.
	ares.jsc.nasa.gov /Education/websites/craters/intro1.htm (628 words)

	APOD: 2002 September 13 - Aristarchus Plateau
		The bright impact crater at the corner of the plateau is
		Aristarchus, a young crater 42 kilometers wide and 3 kilometers deep, surrounded by a radial system of light-colored rays.
		Aristarchus Plateau itself is like a rectangular island about 200 kilometers across, raised up to 2 kilometers or so above the smooth surface of the lunar Ocean of Storms.
	antwrp.gsfc.nasa.gov /apod/ap020913.html (186 words)

	ARISTARCHUS
		Aristarchus is the brightest spot on the Moon and is the center of a system of bright rays that straggle over the surface of the Oceanus Procellarum.
		No other lunar crater of this size has such prominently terraced walls, which are quite massive, and there are many prominent spurs and buttresses.
		The graph below shows the apparent brightness of the crater Aristarchus using the Santa Barbara CCD software by doing a cross section of the lunar formation going from the outside wall through the center of the crater then going to the outside wall again.
	www.ltpresearch.org /aristarchus1.htm (1229 words)

	Lake County Astronomical Society NightTimes
		Aristarchus is one of those objects that’s also recognizable even when it’s in the dark area beyond the terminator -- it can be seen illuminated by earthshine when the Moon’s a thin crescent.
		While Aristarchus is a relatively new crater, Herodotus predates the surrounding maria, as evidenced by its smooth floor that was flooded by lava.
		Nearby is the horseshoe- shaped crater Prinz, which illustrates how lava overspilled it and all but obliterated the crater except for the highest part of its wall.
	www.bpccs.com /lcas/Articles/moonfull.htm (687 words)

	Digital Astrophotography - Detailed Moon
		The Aristarchus plateau is noted for being slightly reddish in comparison to its bluish surroundings.
		This last pair of craters are Stevinus (75 km) at the top, a well formed, classic central peak crater, and Furnerius (125 km), a highly degraded walled plain which would once have looked like Langrenus.
		This is a spectacular crater with a distinct ejecta blanket, terracing on the inner rim and a pronounced central peak.
	homepage.ntlworld.com /dave.woods/astropics/moon_detail/index.htm (519 words)

	NASA - Suitcase Science on the Moon
		Image right: This is a view of the Aristarchus and Herodotus craters taken from orbit during the Apollo 15 mission.
		Aristarchus crater is near the center of the image, and the flooded Herodotus is to the right.
		The depths of some craters in the polar regions may be in permanent shadow because the moon is only very slightly tilted from its spin axis.
	www.nasa.gov /centers/goddard/news/topstory/2007/lsso.html (1157 words)

	Images with AP 155 f9 StarFire EDT & Nikon Coolpix 950 consumer digicam
		Several small craters appear in this image which are not revealed in Antonin Rukl's Atlas of the Moon.
		Aristarchus is 40 km in diameter and was named after the Greek astronomer (c.
		This image clearly shows the aptly named "Cobra's Head" which is formed by the 6 km crater where the Schroter Valley begins and then widens to 10 km.
	www.integram.com /astro/Aristarchus.html (332 words)

	Transient lunar phenomenon - Art History Online Reference and Guide (Site not responding. Last check: 2007-10-17)
		The majority appear to be associated with clefted crater floors, the edges of lunar mares, or in locations linked by geologists with volcanic activity.
		On November 2 1958, the Russian astronomer Nikolai A. Kozyrev observed an apparent outgassing of vapor near the central peak of Alphonsus crater.
		Audouin Dollfus of the Observatoire de Paris observed a series of glows on the floor of Langrenus crater using the one-meter telescope on December 30, 1992.
	www.arthistoryclub.com /art_history/TLP (423 words)

	Catalog Page for PIA00090
		The Aristarchus region is one of the most diverse and interesting areas on the Moon.
		The rilles in this area begin at 'cobra-head' craters, which are the apparent vents for low-viscosity lavas that formed vents for 'dark mantling' deposit covering the plateau and nearby areas to the north and east.
		As a result, the crater ejecta reveal two different stratigraphic sequences: that of the plateau to the northwest, and that of the portion of Oceanus Procellarum to the southwest.
	photojournal.jpl.nasa.gov /catalog/PIA00090 (586 words)

	Aristarchus (crater)
		A conspicuous lunar crater, about 45 km (28 miles) in diameter and 3.7 km (2.3 miles), surrounded by a system of bright rays, which has been the reported site of transient lunar phenomena in the form of reddish glows.
		Aristarchus lies on the northwest part of the near side of the Moon.
		It is bright enough to be visible to the naked eye.
	www.daviddarling.info /encyclopedia/A/Aristarchuscrat.html (89 words)

	Highbeam Encyclopedia - Search Results for aristarchus
		He was the first to propose that the Sun is the centre of the Universe...
		He attempted to calculate the sizes and distances of the Sun and Moon, establishing that the Sun is much larger than the Earth and much farther off than the Moon.
		He discussed Aristarchus' recension of the Homeric text by comparing copies and by examining Aristarchus' commentaries and special treatises...
	www.encyclopedia.com /searchpool.asp?target=Aristarchus (1164 words)

	Crater diameter sequence for central north Oceanus Procellarum for small aperture amateur telescopes
		This crater sequence chart is intended as a resouce for amateur astronomers to explore crater sizes that are visible at various magnifications and apertures.
		The crater sequence chart extends from the lunar equator or north 24 selenographic latitude and to west 65 selenographic longitude.
		Craters in the Gazetter with different designations in Rükl's Atlas were excluded from the chart to maintain consistency between sources commonly used by amateurs.
	members.csolutions.net /fisherka/astronote/plan/trl/cscW55N0.html (1282 words)

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