I am a psychiatrist and psychotherapist who can tell a hawk from a handsaw, and there is a wonderful handsaw in this movie. So, I feel qualified to tell you it is safe to see this movie as it is, without worrying about details like gravity. Do not allow unimaginative naysayers to keep you from enjoying this gem. I mean, we all can enjoy vampire and zombie movies, right? Is any movie any better than "Let the Right One In"? I saw this movie last night in Brookline Mass at a Q&A preview, with director, writers, and an actor -- all combined in two lovely people. No one in our sophisticated audience that included a CETI scientist cared enough about the "laws of physics" problems to mention them in the question period. All we cared about were the endearing characters, the music both acoustic and visual, the plot developments, the shocking climaxes, the compelling emotional plausibility.
The movie is not about anything as terrestrial as gravity. In the world of this movie, something has happened to upset some kind of cosmic symmetry, and the other earth has appeared from a parallel universe. I do wish some character or other had dispelled the physics with "I don't know why our orbits are not affected". But, the metaphor works as a way to discuss looking at oneself. It really does not matter. The acting is perfect, the camera-work perfectly beautiful, the plot deeply affecting with wonderful surprises.
The movie is not about anything as terrestrial as gravity. In the world of this movie, something has happened to upset some kind of cosmic symmetry, and the other earth has appeared from a parallel universe. I do wish some character or other had dispelled the physics with "I don't know why our orbits are not affected". But, the metaphor works as a way to discuss looking at oneself. It really does not matter. The acting is perfect, the camera-work perfectly beautiful, the plot deeply affecting with wonderful surprises.