Explore the surprising discovery of accelerating cosmic expansion in this 27-minute video from the World Science Festival's "Your Daily Equation" series. Delve into the concept of repulsive gravity and its role as dark energy in driving distant galaxies apart at increasing speeds. Learn about the Big Bang theory, Einstein's contributions, distance relationships in cosmology, and the equations governing energy density. Gain insights into pivotal scientific concepts through accessible explanations and engaging stories that offer a fresh perspective on the universe.