I was watching A New Hope and an interesting thought came over me during the final battle... Why didn't any of the rebel ships just get pulled into the tractor beam? I mean, it can't be too hard to pull them in considering the size of the planet. A friend of mine made the argument about how Obi-wan turned the tractor beam off, but I have two issues with that. Firstly, I doubt that a device that small is in control of a single tractor beam that covers the entire Death Star. And if that is the case, as stated in the movie, the Empire allowed the crew to escape on the Millennium Falcon, which means that they know they let them turn the tractor beam off. They easily would have gone over and turned it back on by the time the x-wings and y-wings arrived. Maybe there is an explanation for this, but I can't think of one.