5 Jul 2005AST 2010: Chapter 21 Orbits & Gravity 5 Jul 2005AST 2010: Chapter 22 Laws of Planetary Motion Two of Galileo’s contemporaries made dramatic.
Renaissance Astronomy Nicholas Copernicus 1473 - 1543 (Niklas Koppernigk) Developed a mathematical model for a Heliocentric solar system.
