No, nothing can move through space faster than the speed of light. Einstein showed that. Or, looking at Einstein's work, you could say that "nothing can be accelerated through the speed of light"...which is where the speculation on tachyons comes in (assuming they were created at velocities that were already faster than light). But tachyons are still a speculation and have not been found to actually exist. It would be stunning if they were actually found to exist.