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by VladRussian 5484 days ago
Special Relativity states (and so far all evidence confirms it ) that speeds faster than "c" is impossible relative to (i.e. _through_ ) local spacetime ("aether") . The mathematical model of SR (smooth manifold with static metric (and we know that our real world doesn't have static metric, so real applications of SR approximate it by considering only sufficiently local regions of space during short periods of time)) doesn't cover and thus doesn't preclude or contradict with other types of relative "motions" (for the lack of better term) which are known to exist and have speed faster than "c" :

- quantum entanglement (we don't know the machinery behind it, very-very possible that the SR's smoothness of space is also only a rough approximation of the real world.) Obviously any attempts to find the "signal" between the entangled particles in the conventional sense (something traveling through smooth static spacetime) have so far been and will continue to be futile.

- relative motion of the parts of the (our expanding) Universe that are far enough from each other (observed, space expansion, described by General Relativity, at this scales of spacetime the SR's condition of static metric just isn't valid anymore )