David Mackay

I am not going to pretend that flying a spaceship will be as safe as getting in a 747 with four engines for a flight across the Atlantic.

In any aircraft you fly, you always think about what can go wrong, and you plan for it in advance. You always have back-up plans.

I want to get to the moon. I want to go to Mars.

I'd date someone younger or older; age doesn't matter to me. Or looks, really - it's all about maturity.

In early 1993, when I was 12, I was separated from my family as the Sierra Leone civil war, which began two years earlier, came into my life.

No aeroplane you've ever gotten into had less than thousands of flights before they took their first passenger. Because vehicles are unsafe at first.