Students from other departments who wish to minor in astronomy must complete at least 6 credit hours of graduate courses in astronomy at the 500 level with an average GPA of B (3.0) or higher. The student should discuss proposed course work for the minor with an advisor from the Department of Astronomy, usually the Director of Graduate Studies. One astronomy course at the 400 level may be substituted for one of the 500 level courses upon approval by the student’s astronomy advisor.