Among Gödel's other remarkable achievements: the first to discover a solution to Einstein's equation (for general relatively) in which there are closed, time-like curves. This means it is mathematically possible for there to be universes in which one can go back in time (provided one has enough fuel and time--something probably not physically possible). | Among Gödel's other remarkable achievements: the first to discover a solution to Einstein's equation (for general relatively) in which there are closed, time-like curves. This means it is mathematically possible for there to be universes in which one can go back in time (provided one has enough fuel and time--something probably not physically possible). |