6. Ancient Greek Astronomy

1. Development of Modern Astrophysics - Summaries of the work of: Nicolaus Copernicus (1473-1543), Tycho Brahe (1546-1601), Johannes Kepler (1571-1630), and Isaac Newton (1643-1727).
2. Ptolemy - This site includes illustrations of the geocentric model.
3. Eratosthenes – A brief biography of the Greek astronomer and mathematician who first measured the world, from PBS.
4. How the Greeks Used Geometry to Understand the Stars – A lecture from the University of Virginia, with illustrations.
5. Early Greek Scientists Struggle to Explain How the Heavens Move – An in-depth look at the interaction between Egypt, the Near-Eastern Greeks, and the Ionian Greeks, in the understanding of the workings of the solar system.
6. How the Greeks Used Astronomy – University of Virginia’s Michael Fowler explains how Plato, Aristotle, Eudoxus, and others used circular paths (orbits) to explain observed phenomena.
7. Measuring the Solar System – This Michael Fowler lecture includes Eratosthenes’ measurement of Earth’s diameter and Aristarchus’ theories on the distance to the moon and the distance to the sun.

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