EVAs

Extravehicular Activities (EVAs), commonly known as spacewalks, are operations conducted by astronauts outside their spacecraft in the vacuum of space, typically wearing a pressurized spacesuit with life support systems. The first EVA was performed in 1965 by Alexei Leonov, lasting just over 12 minutes. Since then, spacewalks have been vital for constructing and maintaining the International Space Station (ISS), repairing satellites like the Hubble Space Telescope, and testing new technologies for future exploration. EVAs usually last between 5 to 8 hours, with astronauts tethered for safety and reliant on their suit’s oxygen, temperature regulation, and communication systems. To date, hundreds of EVAs have been completed, providing critical experience for future missions to the Moon, Mars, and beyond, while also pushing the limits of human endurance in one of the harshest environments known.

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