The University of Arizona is a public land-grant research university in Tucson, Arizona. It offers bachelor's, master's, doctoral, and professional degrees through 20 colleges and schools to over 53,000 students. Research activities span disciplines including astronomy, optics, biosciences, engineering, medicine, and social sciences, with annual expenditures exceeding $687 million from federal agencies, foundations, and industry partners. The university operates facilities such as the Steward Observatory, Kitt Peak National Observatory, and Biosphere 2 for scientific research and education. It employs over 15,000 faculty and staff and serves students, researchers, and communities via academic programs, extension services, and public outreach. Classified as an R1 Doctoral University with very high research activity, it is a member of the Association of American Universities and a Hispanic-Serving Institution. Enrollment includes about 40,000 undergraduates and 13,000 graduates.