Tickets and all annual and other memberships are revocable licenses. The Museum reserves the right to refuse or revoke membership and/or deny admission without refund for non-compliance with applicable rules and terms or for inappropriate conduct. Purchase of an annual membership does not entitle purchaser to renewal in a subsequent year. No refunds or exchanges. Tickets are good only for the date and performance for which issued. Tickets are not transferable and not for resale. Ticket prices and membership levels, benefits, and prices are subject to change without notice. Recording and photography are not allowed in the Mugar Omni Theater, Charles Hayden Planetarium, 4-D Theater, Thrill Ride 360º, and many temporary exhibitions. For more information call 617-723-2500 or email information@mos.org.