In today's episode, we're traveling back to 1908 — when a remote stretch of Siberian wilderness became the stage for one of the most powerful explosions in history. A brilliant fireball crossed the sky. A flash lit the horizon. Moments later, an immense blast flattened a vast swath of forest — an event so sudden, so violent, and so strange that over a century later, it still raises the same haunting question: What exactly exploded over Tunguska?