Hours: Displays open Mon.-Sat. 10-5 (also Thurs.-Fri. 5-9), Memorial Day-Labor Day; Mon.-Fri. noon-5 (also Thurs.-Fri. 5-9), Sat. 10-5, day after Labor Day to mid-Dec. and early Jan.-day before Memorial Day. Phone ahead to confirm planetarium show schedule. Observatory open Thurs.-Fri. 9-10:30 p.m. (weather permitting). Center closed Martin Luther King Jr. Day, Presidents Day, school spring break, Memorial Day, July 4, Labor Day and Thanksgiving. Phone ahead to confirm schedule. Allow 1 hour minimum.