Since the space suit is pressurized, it requires some effort to move the fingers of the glove. It's not difficult at first, but after several hours, an astronaut's hands can get tired and sore. The sensation has been compared to squeezing a tennis ball for hours at a time.

Why are spacewalks exhausting?

Exhaustion

Part of the reason spacewalks take so long is that although a 160kg spacesuit is weightless in space, it is still a big, cumbersome piece of kit that is difficult to work in.

Is it exhausting to do a space walk?

The process of doing a spacewalk is not just physically challenging due to the pressurized resistance of the suit, it is also mentally demanding—astronauts have to focus on the work they are doing as well as their safety, a vast number of potential tools, interacting with the crew and with the team down in mission ...