Museum $10; $6 (ages 4-17, ages 65+ and college students with ID). Arboretum free. Planetarium show $8; $6 (ages 4-17, ages 65+ and college students with ID). Fees may be charged for special events and exhibitions.
Museum daily 11-5. Arboretum daily dawn-dusk. Phone for planetarium show schedules. Closed Jan. 1, Memorial Day, July 4, Labor Day, Thanksgiving, Christmas Eve and Christmas.