On April 13, 1970,  the three NASA astronauts of the Apollo 13 mission, were forced to abandon their plans to continue in space, due to the explosion of oxygen tanks.

 

The rescue could be used by the lunar module Aquarius as a lifeboat. The problem with that plan is that the module was designed to accommodate two people for 36 hours, not 3 astronauts for 96 hours:

 

"HOUSTON, WE'VE GOT A PROBLEM!"

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So in a room in Houston, the engineers went to work on creating a procedure for building an air purifier using only those materials that were on board the Apollo 13. 

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-AQUÍ HOUSTON 

(This is Houston)

That's what you got to make!

 

Step by step they were explaining how to make a purifier by: two lithium hydroxide cans, the flight plan covers, plastic bags, gray tape and a soggy sock.

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