2pm: Cosmic Collisions Planetarium Show Cost: $3 per person (includes museum admission). Children under age 4 are not permitted in the planetarium. Early arrival is suggested as tickets are sold first-come, first-served. People are not permitted to enter the planetarium once the show has begun. Take a thrilling trip through space and time, well beyond the calm face of the night sky, to explore cosmic collisions, hypersonic impacts that drive the dynamic and continuing evolution of the universe. Show produced by the American Museum of Natural History.