Recent SemestersSpring 2026, Fall 2025Class Size30 studentsCredits1PrerequisitePrerequisite: (Completion of, or concurrent enrollment in): ASTR C1001 or ASTR 120 Transfers ToUC and CSUCal-GETC Area 5C · IGETC Area 5C · IGETC Area 5A · CSU GE Area B3DescriptionExploration 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 