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
[Illustration: COPERNICUS’S DIAGRAM OF HIS SYSTEM (ANTICIPATED BY
ARISTARCHUS).]