ASTR 307: The Interstellar Medium explores the vast regions of space between stars and their complex interstellar environments. This course provides a comprehensive understanding of the physical processes, composition, and dynamics of the interstellar medium. Students will delve into the study of interstellar gas, dust, magnetic fields, and cosmic rays, and their role in star formation, stellar evolution, and the formation of planetary systems. Through a combination of theoretical concepts, observational techniques, and computational models, students will gain insight into the intricate nature of the interstellar medium and its impact on the evolution of galaxies.