Recent SemestersFall 2026, Summer 2026, Spring 2026, Winter 2026, Fall 2025Class Size44–46 studentsCredits3 Transfers ToUC and CSUCal-GETC Area 5A · IGETC Area 5A · CSU GE Area B1DescriptionIntroduction to the study of stars, galaxies, and cosmology. Includes the nature of light and matter, telescopes, spectroscopy, stellar formation and evolution, galaxies, quasars, and cosmology. Designed for non-majors in mathematics or a physical science. A companion science lab, Astronomy 30L, is also available.