General Discussion
In reply to the discussion: U.S. Has No Explanation for Unidentified Objects and Stops Short of Ruling Out Aliens [View all]elevator
(415 posts)Einstien said that spacetime can be contracted. Alcubierre showed that a warp drive could be possible, which contracts space in front of a vehicle and expands behind it. but again the amount of energy is impossible to utilize at present. Prof. Eric Lentz at the University of Gottinngen is working on a theory that would get around the energy problem.
Of course it's all theoretical. That is what science works on. You do know gravity is a theory and one we cannot explain completely.
As Arthur C. Clarke said " any technology sufficiently advanced would appear as magic".
It is certainly within the realm of the possible that another civilization, or many for that matter, that have technology thousands, if not millions of years advanced beyond ours' has found the answers to superluminal travel.
Has it happened? How the hell do I know. But, to say it is not possible takes a smug, limited view to another level.