Introduction to Astronomy (Honors) Credit Hours: 3 hours. Our sun and other stars, their physical properties and evolution. Interstellar matter and star formation. The origin and evolution of our galaxy, other galaxies, quasars and the Universe. Offered spring semester every year. Prerequisites: Permission of Honors Duplicate Credit: Not open to students with credit in ASTR 1120 Semester Offered: Spring Course Type: Honors Level: Undergraduate