$15 (includes Ballantine House); $8 (ages 62+, children, college students with ID and veterans and their families); free (ages 0-2, Newark residents and students with Newark college IDs). Planetarium additional $6; $4 (ages 62+, children under 12 and college students with ID).
Wed.-Sun. noon-5. Closed Jan. 1, July 4, Thanksgiving and Christmas. Allow 3 hours minimum.