Astronauts practice for spaceflight here on Earth in a number of unique ways, including underwater. In this image, astronauts practiced a maneuver designed for the International Space Station underwater at the Neutral Buoyancy Lab, which is operated by NASA. At this testing facility, astronauts get completely suited up as if they were about to go out on a spacewalk and perform spacewalk tasks underwater on a mock space station.
Later this month, NASA astronauts Victor Glover and Mike Hopkins will put their training to the test as they will embark on a spacewalk during which they will install a small, fridge-sized device on the outside of the space station's Columbus module