PART I
GREEK ASTRONOMY TO ARISTARCHUS
PAGE
Thales	6
Anaximander	10
Anaximenes	13
Pythagoras	14
Parmenides	16
Anaxagoras	18
Empedocles	21
The Pythagoreans	22
Œnopides of Chios	24
Plato	25
Eudoxus, Callippus, Aristotle	28
Heraclides of Pontus	33
PART II
ARISTARCHUS OF SAMOS
The Heliocentric Hypothesis	39
On the Apparent Diameter of the Sun	42
On the Sizes and Distances of the Sun and Moon	43
On the Year and “Great Year”	53
Later Improvements on Aristarchus’s Figures	54
Bibliography	57
Chronology	59

Concentric orbits with Sun at center

Copernicus’s diagram of his system (anticipated by Aristarchus).

CONTENTS