Watch twelve astronaut candidates endure an onslaught of gruelling tests.
See what happens when an emergency splashdown pushes the limits of candidates.
Old fears surface during a series of space-agency swim tests.
The competition heats up when the candidates head to a secret Swedish facility.
Feel the tension as the astronaut candidates fight for their place in the final.
Witness the final showdown as the panelists decide who has the right stuff.
Chris Hadfield
Actor
Kevin Fong
Iya Whiteley
Adrian Dunbar
Narrator
Jon Foat
Director