Thomas Pesquet EVA training

ESA astronaut Thomas Pesquet (left) before entering one of the world’s largest swimming pools at NASA’s Neutral Buoyancy Lab in Houston, USA for spacewalk training. He is wearing a liquid-cooled undergarment that will keep him at the right temperature during the many hours spent training in the spacesuit – or Extravehicular Mobility Unit.
Training underwater on a life-size mockup of the Space Station is one way astronauts prepare for their mission. Floating underwater is one of the best ways train on Earth for weightlessness.