If, like me, you saw Gravity at the cinema you were probably mesmerized by the action the whole way through. And if, like me, you emerged wondering how on earth they made the film, this video is for you.

This draws the curtain back on the production of Gravity, showing just how those special effects and action sequences were brought to the big-screen.

It turns out that most of what we saw as viewers was computer-generated imagery, with even the suits and sets not actually there in the physical realm.

I want to watch Gravity again now having seen how it was made. I suspect this behind-the-scenes video will have killed the magic somewhat.