Explore the significance of supercomputing simulations in advancing scientific research through this 28-minute talk by Bronson Messer, director of science for the Oak Ridge Leadership Computing Facility. Gain expert insights into the role of supercomputing in scientific progress, delve into Messer's perspectives on the Exascale Computing Project, and discover how high-performance computing is shaping the future of scientific discovery. Learn about the cutting-edge applications of supercomputers in various scientific domains and understand the importance of asking 'why' in the context of computational simulations for pushing the boundaries of scientific knowledge.