[Rockingham]

Faster than light travel is a better possibility than most people realize. Conventional physics, as commonly understood, says this is impossible or impractical, but conventional physics many has gaps and contradictions that beguile and trouble top rank theoretical physicists. Modern physics is nearing a breakdown similar to that which beset Newtonian physics before the revolutions of quantum physics and relativity.

We are likely nearing a period of rapid advances that will bring stunning theoretical and practical advances in physics. And if rumors of extraordinary work in covert government projects have any basis, some of these advances may be closer to fruition than all but a few realize.

[Dead Corpse]

We are likely nearing a period of rapid advances that will bring stunning theoretical and practical advances in physics.

Yes we are. What an exciting time to be alive... (no hint of sarcasm, seriously)

[Netheron]

It is true that conventional physics has many gaps, but as far as most physicists know, this is not one of them. I agree that we will have a period of rapid advances, probably fairly soon, but all the mainstream lines of theoretical inquiry (string theory, loop quantum gravity, etc.) assume that c is the speed limit of the universe, at least on the local scale.

The important point to remember is that we have absolutely zero experimental evidence to even suggest that FTL (Faster than Light) effects occur in nature. Only very very strange constructions in General Relativity that assume amounts of negative mass measured in units of negative solar masses may offer a way forward.

So even though extra dimensions or parallel universes may exist, current theory would insist that the speed of light be the same in all of them.