Studying our universe and the gas, stars, and galaxies within it provides insight into physical processes at the extremes of physical scales. This includes phenomena from the subatomic level to scales spanning the visible universe, at extremes of temperature, denisty, and energy, with relevant timescales of 10^-35 seconds to billions of years. This course will apply students' knowledge of physics and mathematical methods to exploration of the processes that govern the formation of evolution of stars, galaxies, and the universe as a whole.