Note: To celebrate the 40th anniversary of the Apollo 13 mission, for 13 days, Universe Today will feature “13 Things That Saved Apollo 13,” discussing different turning points of the mission with NASA engineer Jerry Woodfill. While oxygen tank number two on the Apollo 13 spacecraft was an accident waiting to happen, another problem on … Continue reading "13 Things That Saved Apollo 13, Part 5: Unexplained Shutdown of the Saturn V Center Engine"