Recent discoveries about the universe and its evolution will be the topic of "The Big Bang," a live show at the University of Colorado at Boulder's Fiske Planetarium on Tuesday, April 9, and Friday, April 12, at 7:30 p.m. CU-Boulder Professor Andrew Hamilton will take the planetarium audience on a trip back in time to learn about the "big bang" and how the Milky Way and its stars were formed. The term big bang refers to the theory that the universe began at a single point in space and has been expanding ever since.