"His world is half the size of the real world, and that nearly destroyed his expedition." - Andrew Lambert, naval historian. "Magellan's Crossing" premieres Wednesday 10/20 at 9/8c on PBS. [VID: Footage of a large wooden ship on the ocean interspersed with expert talking heads and reenactments of sailors on a long sea voyage. Transcript: Magellan believes the Spice Islands are roughly 600 nautical miles away. In reality, the actual distance is 30 times that: 20,000 nautical miles lie between him