This week when an American astronaut returned back inside the safety of the International Space Station after having completed a nearly flawless near 7 hour spacewalk, NASA was confronted with a potentially life-threatening problem it thought it had solved two years prior.
As NASA astronaut Terry Virts was re-pressurizing within the Quest airlock on Wednesday after having just finished a cable routing job on the outside of the orbiting laboratory, he reported a water leak within his spacesuit helmet.
While NASA says Virts was in no apparent danger, their engineers on the ground spent the better part of two days investigating what had happened.
This is not the first time such a nightmare leak in a spacesuit helmet has occurred during a spacewalk in recent years. In fact, the last time it happened, the astronaut nearly drowned.
Back in July 2013 Italian astronaut Luca Parmitano had to abort his spacewalk when he reported his helmet was flooding, saying he had water around his ears and