Chapter 4: The Origin of Modern Astronomy (Summary & Reflection)
Chapter 4 of “Astronomy: The Solar System and Beyond” starts with a description of the geocentric view that that the Early Greeks held of the universe. It was Aristotle’s conclusion that the Earth is spherical in shape. In A.D. 140, the Ptolemaic system, a more refined form of the Greeks’ geocentric view, was presented by Claudius Ptolemy. According to Ptolemy, the planets orbited the Earth in epicycles or small circles. It was Nicolaus Copernicus who proposed that the sun is at the center of the universe and the plants orbit around it. Tycho Brahe made the most precise astronomical observations ...