Saturday's a special free family day at the Air Force Academy filled with space, STEM and other programs in the Planetarium.

Monday - Friday: 9 a.m. - 5 p.m. Saturday: 9 a.m. - 4 p.m. Sunday: 10 a.m. - 4 p.m. The University of Colorado Museum of Natural History is closed on all University holidays. During the week, parking ...