Astronaut Jack Swigert and mission commander Jim Lovell heard a loud bang and felt a shudder throughout the ship. Moments later, flight control received a message from Apollo 13:
“Okay, Houston, we’ve had a problem here.”
“This is Houston. Say again please.”
“Houston, we’ve had a problem. We’ve had a main B bus undervolt.”
Apollo 13 was 87 hours from home and had power for 10 more hours. NASA mission control immediately took control. Technicians, engineers, and other experts were assigned to small groups, each mandated to address a particular part ...