[/caption] 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. The rupture and explosion of Apollo 13’s oxygen tank crippled the spacecraft, endangering the lives of the crew … Continue reading "13 Things That Saved Apollo 13, Part 6: Navigating By Earth’s Terminator"