Before astronauts head to space, they have to dive into the Neutral Buoyancy Lab. Take a swim in NASA's underwater training ground with astronaut Nick Hague.

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The Astronaut Training Pool

Hello, we’re NASA. You may have seen our astronauts, rocket launches, or Mars rovers — but have you heard our sounds? From interviews with astronauts and engineers to stories that take you on a tour of the galaxy, NASA’s audio offerings let you experience the thrill of space exploration without ever leaving Earth.