In April 1970, during the glory days of the Apollo space program, NASA sent Navy Captain Jim Lovell and two other astronauts on America's fifth mission to the moon. Only fifty-five hours into the flight of Apollo 13, disaster struck: a mysterious explosion rocked the ship, and soon its oxygen and power began draining away. Commander Lovell and his crew watched in alarm as the cockpit grew darker, the air grew thinner, and the instruments winked out one by one. The full story of the moon shot that almost ended in catastrophe has never been told, but now Lovell and coauthor Jeffrey Kluger bring it to vivid life. What begins as a smooth flight is transformed into a hair-raising voyage from the moment Lovell calls out, "Houston, we've got a problem." Minutes after the explosion, the astronauts are forced to abandon the main ship for the lunar module, a tiny craft designed to keep two men alive for just two days. But there are three men aboard, and they are four days from home. As the hours tick away, the narrative shifts from the crippled spacecraft to Mission Control, from engineers searching desperately for solutions to Lovell's wife and children praying for his safe return. The entire nation watches as one crisis after another is met and overcome. By the time the ship splashes down in the Pacific, we understand why the heroic effort to rescue Lovell and his crew is considered by many to be NASA's finest hour.