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AstroTours

Chapter 2: Patterns in the Sky--Motions of Earth

Chapter 3: Gravity and Orbits: A Celestial Ballet

Chapter 4: Light

Chapter 5: The Tools of the Astronomer

Chapter 6: A Brief History of the Solar System

Chapter 7: The Terrestrial Planets and Earth's Moon

Chapter 8: Atmospheres of the Terrestrial Planets

Chapter 10: Gravity is More Than Kepler's Laws

Chapter 12: Small Worlds and Their Debris

Chapter 13: Taking the Measure of Stars

Chapter 14: A Run-of-the-Mill G Dwarf: Our Sun

Chapter 15: Star Formation and the Interstellar Medium

Chapter 18: Our Expanding Universe

Chapter 19: Galaxies

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