Recent SemestersFall 2026, Spring 2026, Fall 2025, Spring 2025, Fall 2024Class Size24 studentsCredits3 Transfers ToUC and CSUCal-GETC Area 5A · IGETC Area 5A · CSU GE Area B1DescriptionIntroduction to the origin, evolution and structure of the solar system, stars, galaxies and the universe. Milestones in the science of astronomy from ancient times to the space age. Historical development of astronomical ideas leading to current models. Special focus on the latest discoveries from both ground- and space-based instruments. Consideration of current controversies in astronomy and the future of astronomical research. Enrollment Limitation: ASTR A100 ; students who complete ASTR A100H may not enroll in or receive credit for ASTR A100 .Usually HeldMon Wed 2:20pm–3:45pm, Tue Thu 9:35am–11:00am 