The US Aeronautics and Space Administration (NASA) built a swimming pool larger than 10 times the Olympic swimming pool standard, to train astronauts in weightless conditions.

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Sonny Carter training center giant pool, in Houston, near NASA's Johnson Space Center in Houston, Texas, USA.

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Hundreds of astronauts will be trained and trained to get used to the weightless condition of flying into space.

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Many large devices in the swimming pool are all familiar in space, helping astronauts not to be surprised when living on the International Space Station (ISS).

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Astronauts will practice the most difficult exercises, because they may have to encounter situations in more complex conditions when entering space.

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Regular practice at the swimming pool helps astronauts out of the earth's atmosphere to avoid illness, nausea or dizziness.

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Training participants will have to wear astronaut clothes. NASA's swimming pool is also the training ground for astronaut Chris Hadfield, who began to fame over the past few months with a series of YouTube videos about his own experiences in space.

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Astronauts will have to work hard, precisely in the lab movements, to find the missing points and practice carefully, avoiding mistakes when working outside the earth.

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All astronauts' underwater practice is recorded by the camera system. Experts at the operating room will follow the screen directly.