S1E1 - Episode 1
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.
Aug. 20, 2017, midnight
S1E2 - Episode 2
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.
Aug. 27, 2017, midnight
S1E3 - Episode 3
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.
Sept. 3, 2017, midnight
S1E4 - Episode 4
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.
Sept. 10, 2017, midnight
S1E5 - Episode 5
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.
Sept. 24, 2017, midnight
S1E6 - Episode 6
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.
Oct. 1, 2017, midnight