The Vacuum Tragedy proposes a new cosmological model where the Big Bang originated from a spontaneous collapse of a primordial vacuum state. This framework introduces "vacuum memory" and "entropic tension" as mechanisms that resolve the singularity problem and explain cosmic inflation without requiring exotic fields. We present theoretical foundations, mathematical formalism, and testable predictions for cosmic microwave background anomalies. This work originates from Lab Hayati Cosmos 13.8, an independent research initiative in Jakarta, Indonesia.