The repair dubbed the "mail box" that saved the Apollo 13 astronauts. After an oxygen tank exploded, the three men had to retreat to the Lunar Module and use duct tape, plastic bags and lithium hydroxide canisters to build a makeshift CO2 scrubber. [4072 x 4095]

http://go.nasa.gov/1OPjBJ4 via /r/spaceporn http://bit.ly/1RtuW6I