Imagine this: an astronaut, for an unknown cause, removes his helmet during a spacewalk. A true horror story that would culminate in the worst way.
Traveling to outer space has its risks. When you exceed 13 thousand meters of altitude, the lack of oxygen begins to be felt.
At minimal pressure, a human being cannot stay alive for more than a few seconds. Our atmosphere on Earth is unique: to fly into space it is necessary that the pressure and composition in a module resemble the conditions on our planet.
And to go out on a space walk, a helmet is irreplaceable.
As it explains The NASA, The space helmet serves as a bubble and is made of strong plastic to keep the pressure contained within the suit.
In addition, it has a ventilation system that provides oxygen to astronauts.
More Space Helmet Elements
In addition to having the ventilation system, the helmet has a small block of foam so that astronauts can scratch their noses. It seems silly, but it is ultra useful.
Outside the bubble there is a protective visor, which prevents it from being hit or scratched. While in the upper part of the visor there is a sun visor, which serves to protect the person’s sight.
Remember that the sun’s rays are much stronger in space.
Each helmet is made with an elliptical shape, which provides a better view of the walker’s feet.
Without a helmet, what’s the worst that can happen to an astronaut?
But what, specifically, would happen if an astronaut removed their shielding during a spacewalk?
Submitting to the vacuum of space means that all the air will come out of his lungs, losing consciousness in a matter of seconds. Without oxygen, the person will die of suffocation in just two minutes, probably less.
Finally, the body will freeze and float forever.
As we have said, a whole horror story.