Astronauts on the International Space Station (ISS) face unique challenges, including sleeping in zero gravity.
American astronaut Sunita Williams provides a fascinating video tour, revealing how astronauts sleep in their cozy, phone booth-like cabins.
Each cabin is equipped with a sleeping bag to keep astronauts in one place and includes amenities such as a computer, books, and clothes.
Williams emphasizes that astronauts can sleep in any orientation, as they don't experience the sensation of being upside down.
