Astronauts: Do You Have What It Takes?

Astronaut selection is getting tougher as the candidates move from basic to advanced stages of selection. This week the candidates are heading to some of the most specialised astronaut training facilities in Europe.

But first they must overcome a key astronaut selection test - in the swimming pool. An extreme airless environment, water offers the closest analogue on Earth to working in space, and as astronaut Chris Hadfield says: "A comfort and an ability on and in the water is just an essential skill to be an astronaut." As well as swimming lengths in their flight suits and shoes, they must tread water, and work as a team to assemble a weighted ‘Soma cube' on the bottom of the pool.

In week four the candidates leave the German Space Agency behind and head to a secret location in Sweden to face astronaut Chris Hadfield's toughest tests so far. Here, in a military installation, the panel will discover who can cope with a crisis in space.
The candidates will be put through a potentially life threatening test of hypoxia – a deadly condition in which the body is deprived of oxygen.

With the competition coming to a climax, the testing moves on to the ‘operational phase' and becomes even more difficult.

It's the final. The remaining candidates are on Florida's Space Coast to face the toughest tests of the entire selection process. The question astronaut Chris Hadfield wants the tests to answer is this: would I want this person in the seat next to me waiting for launch?