NASA:

“Houston, we’ve had a problem” is the now famous phrase radioed from Apollo 13 to Mission Control upon the catastrophic explosion that dramatically changed the mission.

On the 50th Anniversary of the Apollo 13 mission, we recognize the triumph of the mission control team and the astronauts, and look at the lessons learned. The Apollo 13 mission has become known as “a successful failure” that saw the safe return of its crew Commander James (Jim) Lovell Jr., Command Module Pilot John Swigert Jr., and Lunar Module Pilot Fred Haise Jr.

I watched this as a kid and was equally terrified for their safety and fascinated by what was going on.