When you're in zero gravity everything moves at the same speed and nothing stops it. If you throw something it travels forever but it still travels at the speed you threw it at. To make it plausible, movies have chosen to show it in slow motion.
Danny BoyleTo force yourself out of the comfort zone, the main ingredient is trying to work in a world where you haven't been before, that you don't know the rules of. And that involves a lot of research, so you begin to see where the other people have been, but you are starting from as vulnerable and as low a point as possible.
Danny BoylePeople say you never remember anybody who dies in movies, and it's true, you don't. You don't even remember people who disappear. Although the moment that it happens might be terribly sad and moving, five minutes later, if you're asked to remember that person, you go, "Oh right, yeah, yeah!" 'Cause you're just moving forward.
Danny BoyleTo create the reality of space with this sense of suspension: nothing's happening, it's endless; we're traveling at 28,000 kilometers an hour but nothing's happening. Nothing! And you have to do that! There are all these rules you have to follow, I've never known anything like it.
Danny Boyle