$29.95; $24.95 (ages 13-17, ages 65+, college students with ID, teachers and persons with disabilities); $19.95 (ages 4-12). Free to all several days a year; check the website for specific dates. Admission Thurs. 6-10 p.m. (ages 18+ only) $15; $10 (Exploratorium members); free (Lab members). Separate Tactile Dome admission $15; $12 (Exploratorium members); advance reservations are strongly recommended. Thurs. night Tactile Dome drop-in session $10 (reservations not accepted). Phone ahead to confirm all prices.
Tues.-Sun. and some Mon. holidays 10-5 (also Thurs. 6-10 p.m. for ages 18+). Hours are extended on Mon. and Fri. evenings in summer; check the website for details. Tactile Dome sessions are at 10:15, 11:30, 12:45, 2:15, 3:30 and 4:45 on days the museum is open; each session lasts about an hour. The Tactile Dome also is available on a drop-in basis Thurs. 6-10 p.m. (ages 18+). Closed Thanksgiving and Christmas. Allow 2 hours minimum.