Examination of planets in other star systems and comparison with planets in our solar system. Study the historical context of planetary astrophysics and changes in our understanding of planetary formation and evolution. Explore the possibility of life on other worlds. Carries natural science divisional credit (without lab) in CAS. Effective Fall 2018, this course fulfills a single unit in each of the following BU Hub areas: Historical Consciousness, Scientific Inquiry I, Critical Thinking.