User blog comment:PitaKang/Funday Monday 3: What would an interstellar civilization look like?/@comment-4206034-20130501065435/@comment-32656-20130505045831

Either you're reading that wrong, or the source is - it is, in fact, 0.5 lightspeed.

There are many different theories about going "faster" than light - but none actually do, relying on things like hyperspace, wormholes, bending space, interstellar currents, or spacetime to move instead, going "around" the speed.