 It's all because of technical problems with the capsule, a helium leak, which was known about before the launch, that's now spread. And I should say that the two astronauts aren't in any danger. But it's not great for Boeing. The programme was already a year behind schedule and the crew are stuck in orbit. So what's it like when you're in space and things don't go as planned? A question for former NASA astronaut Susan Kilray.