ExoplanetsExplores the definition, formation, discovery methods, and search for life of exoplanets, including the history of discoveries and the Drake Equation.
Extrinsic Variable StarsCovers extrinsic stellar variability, the history of double stars, microlensing, and extrasolar planet detection.
Central Motion: Forces and OrbitsCovers moment of a force, angular momentum, and central motion in physics, including Kepler's laws and Newton's theory of universal gravitation.