Recent SemestersSpring 2027, Fall 2026Class Size30–50 studentsCredits1PrerequisitePrerequisite: (Completion of, or concurrent enrollment in): ASTR C1001 or ASTR 120 Transfers ToCSUDescriptionExploration of the techniques used in astronomy to determine the physical properties of stars and galaxies. The physical nature of light and the optical principles of a telescope are also explored. Measurements of planetary and stellar phenomena are used to investigate the astronomical methods of determining the size, composition and age of the universe.Usually HeldTue 6:00pm–9:10pm 