ASTR 42 Life in the Universe Description: This course offers an overview of life in the universe. The students will learn about the universal context of life from the Big Bang to present; the origin, nature, and evolution of life on Earth; habitable zones and the potential habitability of planets; the search for life within and beyond the Solar System; discovery, and nature of exoplanets (extra-solar planets); astronomical signatures and markers of life; and the possibility of interstellar travel and communication. Content will focus primarily on astronomy, but will also include concepts from biology, geology, chemistry, and physics. Recommended Preparation: Eligibility for ENGL 1A or equivalent Transferability: CSU; UC  Repeatability: Two Repeats if Grade was D, F, NC, or NP Grading Type: Grade or P/NP Sections listed are for Fall 2025

Sect Days Hours Instructor Location Room Units Status Total Seats Current Enrollment Seats Remaining Date Begin/End Date Final Exam Books 1541 TTh 10:00 am - 12:00 pm Sparks L Kathleen Doyle Hall, Petaluma Campus PC 211 3.00 Open 95 22 73 09/04-12/11 12/11/2025     This is a late-start class; please note the start and end dates. Choose how you attend each class session: (1) in class physically, or (2) completing all course work asynchronously (e.g. via Canvas). You have the flexibility to attend in the format you choose from one class meeting to the next, as your schedule permits. This class can be taken as a fully online class. Attendance is not required, and there are no scheduled Zoom meetings.