Lecture, three hours; discussion, one hour. Requisites: courses 81, 115, Mathematics 31A, 31B, and Physics 1A or 1AH. Open to qualified sophomore and upper-division students. Introduction to formation and evolution of universe from Big Bang to structure formation and galaxy evolution. Development of physics behind our modern understanding of universe on large scales. Including role of dark matter and dark energy. Introduction of energetic phenomena such as active galactic nuclei and quasars. P/NP or letter grading.