What kind of training must an astronaut undergo before going into space?

Question

What kind of training must an astronaut undergo before going into space?

Answer 1

http://www.space.gc.ca/asc/eng/astronaut...

Answer 2

Its a rigorous process of physical, mental, and psychological training and it varies depending on the mission application.

http://www.nasa.gov/astronauts/index.htm...

http://www.pbs.org/spacestation/station/...