Time Line: Important Dates in the "Astronomy of the Greeks"

• May 28th, 585 B.C.- Thales predicts the solar eclipse
• September 9th, 490 B.C.- Date of the full moon that prohibited Sparta from helping Athens battle the Persians in the battle of Marathon
• 4th century B.C. (300's)- Geocentric model of the universe origonated
• 3rd century B.C. (200's)- Aristarchus of Samos invents the heliocentric model of the universe
• Around 200 B.C.- Eratosthenes calculates the size of the Earth, Sun, and Moon
• Return to the Astronomy Home Page