Lecture4: Looks like Greek to me
330 B.C.E
- Heraclides develops geocentric model of the universe.
270 B.C.E
- Aristarchus develops the heliocentric model of the universe.
230 B.C.E.
- Eratosthenese measures the circumference of the earth.
170 B.C.E.
- Hipparchus devises magnitude system and catalogues the stars