"Version: 20201201"--Title page verso.Includes bibliographical references.1. Introduction -- 1.1. What is a planet? -- 1.2. Solar system overview -- 1.3. Brief remarks on this text -- 1.4. Important terms -- 1.5. Chapter 1 homework questions2. Energy from the sun -- 2.1. Energy generation in the sun -- 2.2. Blackbody curves and luminosity -- 2.3. The inverse square law -- 2.4. The equilibrium t…