Apollo 13 was supposed to be NASA’s third Moon landing. Then an oxygen tank exploded, power began collapsing, and the mission became a countdown to survival. Most people remember the famous line, the ...

Correction: An earlier version of this story stated the explosion happened at 55 hours, 46 minutes into the mission. It happened at 55 hours, 55 minutes. April 13, 2020, is the 50th anniversary of the ...