NASA's Apollo 13 mission, which launched on April 11, 1970, was intended to be their third mission to land humans on the Moon, behind Apollo 11, July 16, 1969, to July 24, 1969, and Apollo 12, November 14 to November 24, 1969 (https://en.wikipedia.org/wiki/Apollo_program).

Jim Lovell, Jack Swigert, and Fred Haise's goal was to explore the Fra Mauro highlands and conduct experiments such as: The Passive Seismic Experiment; conduct measurements of moonquakes and internal lunar activity; the Lunar Heat Flow Experiment; measuring outward thermal energy escaping from the Moon's interior; and the Charged Particle Lunar Environment Experiment; measuring proton and electron energy levels reaching the lunar surface from the Sun and monitor the geomagnetic tail (https://www.lpi.usra.edu/lunar/ALSEP/).

On April 13, 1970, the mission nearly ended when an oxygen tank exploded in the service module, crippling the spacecraft. Furthermore, the explosion resulted in a loss of electrical power and a critical shortage of water and oxygen, making it a race against time to bring the astronauts home safely. That being said, they utilized the lunar module as a "lifeboat" and constructed a makeshift carbon dioxide filter, which saved everyone.

At the conclusion of their journey, the crew had 28.2 pounds of water and 28.5 pounds of oxygen remaining (https://www.nasa.gov/missions/apollo/apollo-13-mission-details/).

Overall, Apollo 13 became a "successful failure" and a testament to problem-solving and resilience, which led to improved spacecraft design, better emergency protocols, and a culture of rigorous contingency planning at NASA.