[DOC] [TLE] Ancient Greek astronomy - Wikipedia [PAR] Greek astronomy is astronomy written in the Greek language in classical antiquity
. Greek .... Plato's main books on cosmology are the Timaeus and the Republic. 
In them ... Since all his own works are lost, our knowledge of Eudoxus is obtained 
from ... Callippus, a Greek astronomer of the 4th century, added seven spheres to
... [DOC] [TLE] Greek Astronomy - Ancient History Encyclopedia [PAR] Jul 23, 2013 ... Observational astronomy, which was the main form of astronomy ... Our 
knowledge of Greek astronomy before the 4th century BCE is very incomplete. .... 
the size of the universe was much larger than his contemporaries believed. ... 
work Almagest, a massive astronomical essay completed during the 2nd... [DOC] [TLE] The Beginnings of Trigonometry [PAR] Astronomy was the driving force behind advancements in trigonometry. ... The 
three main figures that we know of in the development of Greek trigonometry are 
... in some special cases with Euclidean knowledge, in order to complete his 
table ... Whatever the case, Ptolemy's Almagest is our main source of information 
on... [DOC] [TLE] Modern Constellations - Constellation History [PAR] Knowledge of the sun, moon, and stars, and their associated mythology, was ... 
Many of our present day constellations can be found in a book called the 
Almagest, ... Ptolemy made his own celestial observations from about 120-150 
A.D. but also ... and perhaps most, from Hipparchus, a 2nd century B.C. Greek 
astronomer. [DOC] [TLE] Hipparchus | Greek astronomer | Britannica.com [PAR] Greek astronomer and mathematician who made fundamental contributions to 
the ... Knowledge of the rest of his work relies on second-hand reports, especially 
in the great ... compendium the Almagest, written by Ptolemy in the 2nd century 
ad. ... yearthe period for the Sun to complete one passage through the ecliptic. [DOC] [TLE] Ptolemaic system | astronomy | Britannica.com [PAR] The principles of this model were known to earlier Greek scientists, including the 
... (His estimate of the Moon's distance was roughly correct, but his figure for the 
... with the Almagest of Ptolemy, who worked in Alexandria in the 2nd century ad. 
.... Britannica to test your knowledge of the planets in the Earth's solar system. [DOC] [TLE] Mathematical Methods in Ancient Astronomy - CiteSeerX [PAR] The main source for our knowledge of ... monly known as the Almagest, quotes 
observations of his own rang- ... To our knowledge, Egypt exercised no positive 
influence on the ... lapsed for many centuries into a primitive stage of knowledge 
where a ... complete had not Greek astronomy found a new and most interesting. [DOC] [TLE] Ancient Greek Astronomy and Cosmology - Finding Our Place in the ... [PAR] Ancient Greek astronomers' work is richly documented in ... By the 5th century 
B.C., it was widely accepted that the .... Claudius Ptolemy (90-168) created a 
wealth of astronomical knowledge from his home in Alexandria, Egypt. ... was 
published in his primary astronomical work, Almagest... [DOC] [TLE] Hipparchus (astronomer) facts, information, pictures | Encyclopedia ... [PAR] Nicaea, Bithynia [now Iznik, Turkey],first quarter of second century B.C.; d. ... most 
of our knowledge of Hipparchus' achievements in astronomy from the Almagest; 
... for his work, his main concern was not to transmit it to posterity but to use it and, 
... it vanishes from Greek astronomy, being superseded by Ptolemy's improved... [DOC] [TLE] Ptolemy facts, information, pictures | Encyclopedia.com articles ... [PAR] Our meager knowledge of Ptolemy's life is based mostly on deductions from his ... 
in his major astronomical work, the Almagest: these are all from the reigns of the 
.... made in the Greek world from the late fifth century b.c. The earliest were mostly 
of the ..... Having established a complete theory of the motion of sun and moon,... [DOC] [TLE] Nicolaus Copernicus (Stanford Encyclopedia of Philosophy) [PAR] Nov 30, 2004 ... 2.1 Pre-Copernican Astronomy; 2.2 The Commentariolus; 2.3 On the ... of a good 
reading knowledge of Greek was critical for his studies in astronomy because .... 
By the second century, when Ptolemy compiled his Almagest (

Question: Our main source of knowledge of Greek astronomy is his "Almagest", completed in the 2nd century
Answer: Ptolemy