![]() ![]() He knows what awaits him.īut there is a possibility of a mechanical failure and that the astronaut accidentally runs out of a helmet. Every astronaut knows that he must never take off his helmet while he is in space. It houses a ventilation system that supplies the astronaut with oxygen. The astronaut helmet serves as a pressure bubble that keeps the pressure of the suit contained. ![]() The conditions in space are completely different from those on Earth, so the astronaut learns how to move in a weightless state, how to use the equipment, and what he can and can’t do. What would happen if an astronaut removes his helmet in space?Īstronauts have many years of training that prepares them for going into space, and especially for spacewalking. Therefore, the astronaut would have no chance without a helmet. The universe is a vacuum, that is, an empty space without any matter, without air. But in space, the air is not just less dense. Already with the Karaman Line, the line that separates the Earth’s atmosphere from outer space, the air is much rarer than on Earth. Even planes don’t fly too high because they need oxygen to burn the fuel that drives their engines. The higher we climb, the less oxygen there is in the air. We know that oxygen is necessary for humans. In a maximum of 45 seconds, the astronaut would faint, and in about one or two minutes the astronaut would die a very painful death. ![]() In 15 seconds the oxygen from the bloodstream would completely disappear. When the astronaut removes his helmet, the vacuum would pull all the air out of the astronaut’s body and he would be completely out of the air in just a few seconds. Is it even possible? What would happen if an astronaut removes his helmet? Imagine then what it would be like to breathe in space. Likewise, people who climb Mount Everest carry oxygen with them so they can breathe. When we fly in an airplane we feel a strong pressure in our ears, but our body is protected in the cabin. Even in the Earth’s atmosphere, we can sometimes feel how different the conditions are when we are at a higher point. Life outside the Earth’s atmosphere is impossible without additional protection. The universe is one of the most extreme environments. ![]()
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