Astronauts spacewalk outside the ISS

We have all seen footage of the famous spacewalks and have probably felt a tinge of jealousy at the astronauts who get to explore space in such a manner. We have also likely wondered about the science, engineering and technology that goes into making such events a reality.

Indeed, spacewalks may seem like a lot of fun but they are also a lot of work. Astronauts need to spend a lot of time preparing for these journeys. First, they must put on their pressurized suits and breathe oxygen for a few hours in order to get rid of all the nitrogen in their bodies.

This allows them to prevent decompression sickness, or ‘the bends,’ which refers to the event when painful and deadly bubbles of nitrogen form in the bloodstream.

For this and for other reasons, spacewalks are rare as they are dangerous and time-consuming.

What are the other reasons spacewalks are so rare? How do astronauts train for such missions? How do they ensure they don’t get carried far away from the International Space Station? What tools do they use during their spacewalks? We answer all these questions and more in our video. Enjoy!


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