On April 11, 1970, NASA launched the Apollo 13 mission to send three astronauts to the moon. Little did they know their story would become one of the most memorable events in the history of spaceflight. James A. Lovell, John L. Swigert, and Fred W. Haise were due to be the third manned mission to land on the moon.
However, 56 hours into the flight, oxygen tank 2 exploded. Disabling the normal supply of oxygen, electricity, light, and water. The astronauts were forced into the lunar module to use it as a lifeboat, which was meant to last for 48 hours for 2 persons. The LM didn’t have enough carbon dioxide scrubbing chemical canisters to keep the air breathable all the way back to Earth. They had to build a crude adapter using spare parts on board, to make use of canisters meant for the command module. The crew who went on one-fifth water rations and would later endure cabin temperatures that hovered a few degrees above freezing
On April 14, Apollo 13 swung around the moon. And on April 17, a last-minute navigational correction was made, this time using Earth as an alignment guide. Just before 1 p.m., the spacecraft reentered Earth’s atmosphere and the astronauts splashed down safely into the Pacific Ocean.