"Version: 20251201"--Title page verso.Includes bibliographical references.part I. Newton's gravity and orbits. 1. A review of newton's laws and an introduction to python -- 1.1. Overview -- 1.2. Scientific background -- 1.3. Using Python as a calculator -- 1.4. Arrays and (avoiding) loops -- 1.5. Using Python modules to help with units -- 1.6. Defining your own functions2. Kepler's laws of plan…