let's bring in friend of the programme and retired nasa astronaut, leroy chiao. whenever icd stories, i always think back to the movie apollo 13. what if it goes wrong for these four non—astronauts up there above the earth. non-astronauts up there above the earth. . r' . , non-astronauts up there above the earth. , ., , earth. there is risk in any space fliuht, earth. there is risk in any space flight, lunching on _ earth. there is risk in any space flight, lunching on top - earth. there is risk in any space flight, lunching on top of - earth. there is risk in any space flight, lunching on top of our i flight, lunching on top of our rocket you're going to have to accept the risk. in a high—level committee could argue that maybe there is a little more rest because there is a little more rest because there is a little more rest because there is no manual back—up domino professional astronauts on board who could manually slide to safe craft. however, space facts, i know they have dropped through all of this, they worked throughout the issues. it's fully automated, and the mission control centre at space x can issue commands to the spacecraft, so i think if they are well in hand, the risks have been