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Topic: Aristarchus of Samos

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	Aristarchus
		Aristarchus of Samos, often referred to as the Copernicus of antiquity, laid the foundation for much scientific examination of the heavens.
		Aristarchus determined that at this precise moment the angular separation between the moon and the sun, that is, the angle from Moon to Earth to Sun, is equal to 87 degrees, as he stated in his fourth hypothesis.
		In terms of heliocentricity or the movement of the earth, the only person to follow Aristarchus' philosophy was Seleucus, who in 150 BC attributed the ocean tides to the stirring of air caused by the rotation of the earth and its interaction with the revolution of the moon.
	www.perseus.tufts.edu /GreekScience/Students/Kristen/Aristarchus.html (1003 words)

	History of Samos
		Samos reached its pinnacle during the period it was governed by the tyrant Polycrates (546 - 522 BC).
		Samos which constituted the bridge between Greece and East, managed for many years, because of its power, to remain independent, while at the same time flourishing, despite the battles that were waged to conquer it.
		The modern culture of Samos impressed on the traditional built-up areas, the extraordinary churches, most of which were build during the 18th and 19th century, the 16th century monasteries, the impressive neoclassical buildings, the tanneries at Karlovasi, tobacco factories and wine-stores that also indicate the main activities of its inhabitants.
	www.greece.org /orgs/samians/samoshistory.htm (1379 words)

	Wikinfo \| Aristarchus
		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.
	www.wikinfo.org /wiki.php?title=Aristarchus (609 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-groups.dcs.st-and.ac.uk /~history/Biographies/Aristarchus.html (1584 words)

	Aristarchus
		Aristarchus of Samos (310-230 B.C.), was a astronomer often referred to as the Copernicus of antiquity, laid the foundation for much scientific examination of the heavens.
		In order to determine the actual values for the sizes of the sun and moon, Aristarchus used two observations: first, that the disk of the moon just covers the sun during a solar eclipse--although this is not always true, for the sun appears larger during an annular eclipse.
		Second, that during a lunar eclipse the shadow of the earth appears to be twice as large as the moon at the moon's distance.
	www.angelfire.com /ca5/ancientgreecescience/aristarchus (929 words)

	Aristarchus and the Heliocentric Theory
		Aristarchus of Samos, the "Copernicus of antiquity" (310-230 BC.) is credited by the Greek mathematician and inventor Archimedes to the hypothesis that the Sun, and not the Earth is the center of planetary motion.
		These people rejected Aristarchus' hypothesis because they believed that the appearance of the fixed stars would change in different parts of the Earth's orbit, but Aristarchus thought that the distance of the fixed stars was so great this effect was unnoticeable.
		Aristarchus wrote a discourse, "On the sizes and distances of the Sun and the Moon." Through a series of observations he discovered the ratios of the Sun's and Moon's distances from the Earth, and the ratio of their sizes compared to the size of the Earth.
	share2.esd105.wednet.edu /jmcald/Aristarchus/history.html (392 words)

	Aristarchus of Samos - Wikipedia, the free encyclopedia
		230 BC) was a Greek astronomer and mathematician, born on the island of Samos, in ancient Greece.
		Aristarchus thus believed the stars to be very 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 of Samos - The Ancient Copernicus, A history of Greek astronomy to Aristarchus together with Aristarchus' treatise on the sizes and distances of the sun and moon, a new Greek text with translation and notes.
	en.wikipedia.org /wiki/Aristarchus_of_Samos (720 words)

	Aristarchus...SciPeeps.com
		The only work of Aristarchus which has survived to the present time, On the Sizes and Distances of the Sun and Moon, is based on a geocentric worldview.
		But Aristarchus has brought out a book consisting of certain hypotheses, wherein it appears, as a consequence of the assumptions made, that the universe is many times greater than the 'universe' just mentioned.
		"[Cleanthes, a contemporary of Aristarchus] thought it was the duty of the Greeks to indict Aristarchus of Samos on the charge of impiety for putting in motion the Hearth of the universe [i.e.
	www.scipeeps.com /aristarchus.html (572 words)

	netcyclo: Aristarchus
		born: around 310 BC died: around 230 BC Aristarchus came to Alexandria in his youth and is known to have studied with Strato.
		Aristarchus believed that all the planets revolved around the sun, and when the moon is half-illuminated, the earth, moon, and sun must occupy the pieces of a right triangle.
		This theory was correct but he had no instruments capable of measuring angles accurately, therefore, he never obtained proof Aristarchus knew it was not logical that the sun revolved around the earth; he thought that the smaller object should revolve around the larger and he was right.
	www.netcyclo.com /people/a/aristarc/aristarc.htm (148 words)

	Astrophotography by Anthony Ayiomamitis (Site not responding. Last check: 2007-10-15)
		Aristarchus is best known for having put forth the heliocentric theory when describing the motion of the heavenly bodies whereby the planets orbit about a stationary sun in independent orbits.
		Aristarchus emphasized that the sphere containing the stars was infinitely larger than the corresponding sphere which contained the orbit of the earth around the sun and, thus, the stationary nature of the stars in the sky could be explained.
		Crater Aristarchus (23.7° N, 47.4° W), measuring 40-km in diameter with steep slopes and 3 km high, is the brightest crater on the moon and is visible during earthshine.
	www.perseus.gr /Astro-Greek-Archae-Astr-Ari.htm (626 words)

	Aristarchus of Samos (Site not responding. Last check: 2007-10-15)
		Aristarchus was born around 320 before Jesus Christ on the Greek Island of Samos.
		Aristarchus is known to have the first proponent of the heliocentric hypothesis, with the Earth ascribed a movement of orbital rotation about the Sun, as well as a daily axial rotation.
		Aristarchus of Samothrace (-220 / -243), the director of the Library of Alexandria.
	goofy313g.free.fr /calisota_online/exist/aristarchus.html (243 words)

	Aristarchus of Samos
		Aristarchus was born on the island of Samos around 320 BC.
		However, largely through the writings of Archimedes (287-212 BC) and Plutarch, Aristarchus is known to have the first proponent of the heliocentric hypothesis, with the Earth ascribed a movement of orbital rotation about the Sun, as well as a daily axial rotation.
		Aristarchus argued that the lack of observed annual parallax in the fixed stars could be explained, within his heliocentric model, by assuming that the distance to the fixed stars is very much larger than the size of the Earth's orbit.
	www.hao.ucar.edu /Public/education/bios/aristarchus.html (189 words)

	Aristarchus of Samos Biography \| scit_01123_package.xml
		Aristarchus is famous for developing the first heliocentric planetary theory.
		Aristarchus was first to attempt a determination of astronomical distances and dimensions by geometrical analysis.
		Aristarchus argued, respectively, that Earth's orbital radius was so small in comparison with the Sun's distance and the distance of the stars so great that neither effect was large enough to observe.
	www.bookrags.com /biography/aristarchus-of-samos-scit-011232 (617 words)

	samos wines about samos useful Telephones beaches monasteries
		Samos is an island, which combines history, stretching back tï prehistoric times, and tradition with natural beauty and is truly an ideal place for holidays.
		The island of Samos is the eighth biggest Greek island and lies in the heart of the Central Aegean, 1,200 metres from the shore of Asia Minor.
		Aristarchus was the first to claim that the earth moves round the sõn, and at the same time revolves on its own axis.
	samos-travel.com /aboutsamos.html (644 words)

	Aristarchus of Samos
		Aristarchus lived from about the year 310 before the present era to about 230, and among the geometers he succeeded Euclid and preceded Archimedes.
		Aristarchus’ book on the planetary system with the Sun in the center did not survive, and we know of it only through references to its content, chiefly by Archimedes.
		Aristarchus regarded the Sun as one of the fixed stars, the closest to the Earth.
	www.varchive.org /ce/orbit/arisam.htm (534 words)

	Aristarchus - Wikipedia, the free encyclopedia
		Aristarchus of Samos, Greek astronomer and mathematician (310 BC - c.
		Aristarchus of Samothrace, Greek critic and grammarian (220?
		Aristarchus of Thessalonica, a companion of St. Paul.
	en.wikipedia.org /wiki/Aristarchus (106 words)

	Aristarchus (via CobWeb/3.1 planetlab1.rutgers.edu) (Site not responding. Last check: 2007-10-15)
		Aristarchus' measurement was probably off because first, it is hard to determine the exact centers of the Sun and the Moon and second, it is hard to know exactly when the Moon is half full.
		During a lunar eclipse, he measured the duration of time between the moment when the edge of the Moon first entered the umbra and the moment when the Moon was first totally obscured.
		Aristarchus also reasoned that since the Sun and the Moon have the same angular size, but the Sun is 19 times further (or so he thought), then the Sun must be 19 times bigger than the Moon.
	astrosun.tn.cornell.edu.cob-web.org:8888 /courses/astro201/aristarchus.htm (376 words)

	Could Earth be Revolving around the Sun? (Site not responding. Last check: 2007-10-15)
		Aristarchus of Samos, an early Greek astronomer (about 310 to 230 BC), was the first to suggest that the Earth revolved around the Sun, rather than the other way around.
		He gave the first estimate of the distance of the Moon (section (8c)), and it was his careful observation of a lunar eclipse--pin-pointing the Sun's position on the opposite side of the sky--that enabled Hipparchus, 169 years later, to deduce the precession of the equinoxes).
		Knowing the Sun's motion across the sky, Aristarchus could also locate the point P in the sky, on the Moon's orbit (near the ecliptic), which was exactly 90 degrees from the direction of the Sun as seen from Earth.
	www.phy6.org /stargaze/Sarist.htm (1068 words)

	Ancient Samos
		Samos (Greek Σαμος) is an island in southeastern Greece in the Aegean Sea, near the coast of Turkey.
		In the 6th century BC Samos was ruled by the famous tyrant Polycrates.
		The astronomer Aristarchus, whom history credits with the first recorded heliocentric model of the solar system, lived on Samos.
	www.mlahanas.de /Greeks/Cities/AncientSamos.html (593 words)

	Greekislands.com : Samos Island
		The essential beauty of the nature, the historical sites that are spread all over the island and the charming mountainous landscape of Samos create a unique atmosphere which enchants the visitors and carry them in another era.
		The history of Samos in the Pre-historic times is close joint with the goddess Hera which was believed to had been born in the island and for her sake Ionians built in the 7th century BC, the famous
		An island which live its traditions, and this can be felt in every step one takes there and in every meeting with the courteous and hard - working people of the island who they still follow the steps of their great ancestors.
	www.greekislands.com /samos/home.htm (636 words)

	Stanford SOLAR Center -- Ask A Solar Physicist FAQs - Answer
		Aristarchus of Samos (Samos is a Greek island in the Aegean Sea) lived from about 310 to 230 BC, about 2250 years ago.
		Aristarchus then suggested that the small Earth orbits around the big Sun rather than the other way around, and he also suspected that stars were nothing but distant suns, but his ideas were rejected and later forgotten, and he, too, was threatened for suggesting such things.
		Aristarchus and Anaxagoras had no way of actually measuring the sizes of or distances to stars (except the Sun), so they had no proof for their ideas.
	solar-center.stanford.edu /FAQ/Qsunasstar.html (1606 words)

	Aristarchus of Samos (ca. 310-ca. 230 BC) -- from Eric Weisstein's World of Scientific Biography
		This model was too revolutionary to be accepted by his contemporaries who debunked the theory because it conflicted with geocentric religious principles, as well as Aristotle's principle that all objects move toward the center of the Earth.
		Aristarchus' model also predicted stellar parallax and seemed to imply that falling bodies would be swept westward, neither of which were observed.
		Heath, T. Aristarchus of Samos, Ancient Copernicus: A History of Greek Astronomy to Aristarchus Together with Aristarchus's Treatise on the Sizes and Distances of the Sun and Moon.
	www.astro.virginia.edu /~eww6n/bios/Aristarchus.html (202 words)

	Aristarchus Biography
		Aristarchus biography, outline: Greek astronomer, born 310 BC (Samos), developed heliocentric model of the universe, died 230 BC.
		Aristarchus of Samos is the main precursor of Copernicus.
		This biography of Aristarchus has focussed on his philosophical and scientific views, for a broader and more detailed account you should refer to Encyclopaedia Britannica.
	www.321books.co.uk /biography/aristarchus.htm (316 words)

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