How do I ... become an astronaut?

Nasa may be accepting applications, but even if you are the right nationality, in tip-top condition and with an off-the-planet CV, you still need a lot of luck

Nasa has announced it will be accepting applications for astronauts to pave the way for a new generation of space exploration. Sadly, only alpha Americans may apply. But space isn't just about America. Next month, Tim Peake will become the first British astronaut to travel in space for more than 20 years. A dozen other nationalities have boldly gone. The cosmos has never been so, er, cosmopolitan.