The Graduate Program of the University of Arizona Department of Astronomy and Steward Observatory trains students to become independent scientists with the knowledge and skills to conduct and communicate world-class astronomical research. A Ph.D. in Astronomy from the University of Arizona signifies a student’s excellence in research, which is demonstrated through a significant, original, and scholarly contribution to astrophysical knowledge. We admit graduate students who have met high standards of achievement and shown potential for conducting original research, with the expectation that they will succeed in attaining a doctoral degree in astronomy. The academic program is structured in support of this goal, emphasizing research throughout the graduate career; providing mentoring from individual advisors and our interactive community of students, postdocs, scientists, and faculty. Students will gain firsthand experience with the tools and facilities that define the state of the art in our field.