Andreas training

ESA astronaut Andreas Mogensen about to head underwater for spacewalk training at NASA’s Neutral Buoyancy Lab in Houston, USA. As the spacesuit is too heavy to be used on Earth, astronauts are lowered underwater by crane.

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 to train on Earth for weightlessness.