It really seems like the producers of the movie contact were out of touch with their physics in some parts of the movie (sorry for the pun). Nearing the end of the movie the writers made an error in their physics and it really begs to be rewritten. So, here is my attempt at it. Nearing the end of the movie, Jodie Foster's character comes back from her trip into the space void after falling through the contraption. In essence, what appears to be 18 hours in Jodie's reference frame, is actually only 1 or 2 seconds in the earth's frame of reference. This is sort of right, however, it's backward as to what relatively and the twin paradox actually states should happen. It should have been 1 or 2 seconds in Jodies from of reference and 18 hours for the people on earth if she was traveling at the speed of light for any given portion of time. Even warping space-time with a warp hole would cause the same effects such as the movie suggests happens. So, in essence, Jodie would ...