This is a one-semester calculus- and physics-based introduction to astrophysics as applied to stars, the interstellar medium, and galaxies. Prerequisite: Prerequisites: PHYS 003 and PHYS 004; MATH 025 or equivalent by placement Natural sciences and engineering. Evening labs and observing sessions required. 1 credit. Fall 2025. Zanger. Fall 2026. Zanger. Fall 2027 Cohen. Catalog chapter: Physics and Astronomy Department website: http://www.swarthmore.edu/physics-astronomy