"Instead of moving through space, you actually move the fabric of space itself," Obousy says. "A hypothetical spacecraft would remain stationary inside a bubble of mutually expanding and contracting space-time. So, whereas an object moving through space is restricted by the rules of relativity, there are no such rules and restrictions regarding space itself."
How's that for a loophole? From a theoretical standpoint, the universal speed limit only applies to things moving through space, not space itself. Of course, it helps to lay a little evidence on the table.
"We indeed believe that space-time expanded at many, many times the speed of light during the inflationary period, which occurred in the first fraction of a second after the big bang," Obousy said.
In a very broad sense, the question of warp speed feasibility comes down to this: Given sufficiently advanced technology, would it be possible to recreate this space-time expansion and exploit it for interstellar locomotion?
Is Warp Speed Possible?
Make no mistake: Warp drive technology is highly speculative. Astrophysicists such as Obousy, Miguel Alcubierre and Kip Thorne have explored the underpinning theories in various papers, but it remains far-future technology at best.