My father was not only a planetary scientist and a great popularizer of science, but he thought very deeply about the world. He was a scholar, he studied history. He taught a class in critical thinking, and he was very, very aware of the directions we might go.

Dad was a difference maker. He reached out to people. He took them by the awe and wonder we feel over the most important questions we can think to imagine. He pulled them away from blind faith, away from pseudoscience, toward a deeper, richer understanding of the universe.

Life in space is impossible,' we're warned, and amidst the hypnotic beauty of these heavens, we become painfully aware of what a hostile environment space is, how unforgiving, how unsympathetic to human desires.

Astonishingly powerful and poignant, 'Gravity' is the rarest of rares: a space survival film informed by a genuine reverence for the awe-inspiring cosmos we inhabit.

I'm not one of those actors who gets so taken by a role that I can't live my life. I'm the type of actor who goes to work, transforms into a character, takes you on a journey, and then comes back home to be Billy. When I'm in it, I'm in it, but I know how to get out of it. When you can't shut it off, you're a crazy person. I'm not crazy.

You've got a movie where the pro-choice family gives their daughter no choice. The pro-life family murders. What seems to be the good mother, the kind of hippie painter, sweet and cute mother has no love for her daughter really.

Personally, for me in my life, I think every journey should be an ongoing journey, for anyone.

My life experience has made me realise what's important and what is not.