Season 1

1. Episode 1

2017-08-20 · 60m

Chris Hadfield, Dr Kevin Fong and Dr Iya Whiteley put 12 candidates through a series of physical and psychological tests to find out who has what it takes to be an astronaut.

2. Episode 2

2017-08-27 · 60m

The remaining astronaut candidates are put through more demanding tests. They have to escape from an underwater capsule and operate a groundbreaking robot - the Mars Rover.

3. Episode 3

2017-09-03 · 60m

Old fears surface when the remaining candidates face some space agency swim tests. Their teamwork and mental agility are scrutinised in an underwater test, assembling a large cube.

4. Episode 4

2017-09-10 · 60m

The competition becomes more intense as the remaining candidates are deprived of oxygen to see if they can recognise the signs of hypoxia, critical for an astronaut on a spacewalk.

5. Episode 5

2017-09-24 · 60m

The astronaut candidates fight for their place in the final. Their leadership skills are assessed in a survival test and they head off to the Kennedy Space Centre in Florida.

6. Episode 6

2017-10-01 · 60m

The finalists head to the Shuttle Landing Facility on Florida's Space Coast for a tough test in weightlessness, and back in London the winner is decided.