The Mt. SAC Earth Sciences and Astronomy Department is among the largest in the California Community College system, offering a full range of exciting courses for transfer credit and for general interest. Our modern facilities include a state-of-the-art planetarium, well-equipped laboratories, and evening sky observing opportunities . Mt. SAC is known for its excellent geology field program, and instructors who strive to bring you an education that is relevant to today’s world. Explore Mt. SAC’s Astronomy and Earth Sciences Department and prepare for a lifelong love of science and the world around you. Come and investigate the stars, planets, rocks, and waters of our existence - the universe awaits!