What kind of talent I had when I was really young was that I was able to concentrate on something for a really long time. My interest didn't really wane...That's been my main advantage. I've never been the one to grasp things the quickest, but I never stopped learning as soon as I became interested in a subject.

Well, yes, no, I certainly visualise … it was really … I had to have a very good idea of the geometry – that was crucial. Spacetime geometry so it's not three dimensions, you have to think of the whole four dimensional spacetime, and I get sort of used to thinking about four dimensions and using various tricks to get the picture properly. I do most of my thinking in visual terms, and I'm a very visual thinker rather than writing down equations.

The look of the thing is one thing. The sound of it is more important. … When you write a play, it makes a certain kind of noise in your head, and for me rehearsals are largely a process of trying to reproduce that noise. It is not always wise to reproduce it in every instance, but that’s another question.

I was very, very thorough, making sure I really understood how that telescope worked, and that it was working properly. I was quite convinced that I wasn't clever enough to be in Cambridge and would be thrown out at some stage. My policy was to work as hard as I could so that I'd know I'd done my best. We now label this as impostor syndrome, but we didn't recognise, and certainly didn't name it, back then.

I was really vulnerable right before I left the coach, and I said to him, 'Are you still going to love me if I don't win this thing?'

But I was not really planning to create what seems to be a lasting impact. I was just always about personal expression and pride in who I was as an Australian Indigenous girl. It was more about me sharing all of me with the world. But, certainly after all these years, it makes me really proud.

I looked straight across at the clock and I was disappointed with the time. I should have run under 49 and I didn't. And I knew I had a lot more in me.