In this final part of Lecture 1, we introduce the final form of the model of orbital motion to be used in the class. Specifically, we state Kepler's 3 laws of planetary motion and Newton's law of universal gravitation coupled with Newton's Second law. We also describe some of the impact of Newton's work and examine how, over 2000 years of history, development of the orbital models of planetary motion has been a driver of, and been driven by, technology.

CORRECTION: Area of on ellipse on slide 19 should be pi*a*sqrt(1-e^2)