The plot assumes that gravity does not apply in deep space, which is fair, unless you find yourself in the proximity of a planet. However, the movie scene is very close to Earth surface, Hubble Telescope being low-orbit. Given that Earth radius is around 6000km, at 600km altitude you should feel around 90% of the gravity on Earth. The movie completely oversees that. Actually, the only way to be gravity free at this altitude is to be inside or hooked onto a Geo-stationary orbiting unit (like a satellite). Withstanding that, you are subject to Earth gravity. Floating around chaotically is not an option, you will be sucked by Earth's gravity field. On the other hand, if you are on a stationary orbit, you will revolve on a fixed position relatively to Earth, so you cannot see Earth spinning like this movie magnificently shows. I find it difficult to make terms with laws of physics being completely skewed. I guess that attention to detail could have been a bit better.