The tour of the Star City Cosmonaut Training Center gives as near as perfect feel of space-life as can be recreated on Earth. A full size replica of the Mir orbital space station «Mir», all its modules and a Soyuz spacecraft, is submerged in a vast swimming pool. Conditions underwater are as close as can be to the realities and dangers of life in space. Astronauts train for spacewalks and engineering in orbit and learn to live and work in weightless conditions. The tour includes the world’s largest space centrifuge, which is used to simulate the stress of spaceflight.