How do you film a movie set in space? Well, you can either invent some kind of silly gravity device which negates the true physics of space, or you can go through a hell of a lot of effort to pull it off realistically.
's Gravity is a perfect example of this. Check out just how they did it in the new behind the scenes featurette below (Beware spoilers!):
What do you think? Should Gravity sweep up the Oscars next year?