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Last Updated: Monday July 20 2009 13:27 GMT

How do I become an astronaut?

Astronaut

The need for qualified space professionals will increase in the future, but it's not easy to become an astronaut.

Nasa says you must be physically fit and highly qualified in engineering, biological science, physical science, or mathematics.

Also required is at least 1,000 hours experience of piloting a jet aircraft. And the training takes up to two years.