Rangos Omnimax Theater at the Carnegie Science Center, One Allegheny Ave., North Side, is showing "Under the Sea," "Grand Canyon Adventure: River at Risk" and "Mummies: Secrets of the Pharaohs." Admission cost varies. Omnimax is not recommended for children younger than 3. Call 412-237-3400.

<B>Tuesdays2</B> free movies is scheduled to show "Twilight," about a teenage girl who risks everything when she falls in love with a vampire, at 2 p.m. Tuesday in the Kean Theatre at St. Barnabas, Washington Place, 5847 Meridian Road. At the same site, <B>Wednesdays1</B> will show "Australia" starring Hugh Jackman and Nicole Kidman at 1 p.m. Wednesday. Admission is free, but donations are accepted to benefit the St. Barnabas Free Care Fund. Call 724-444-6288.