(smirks at Pakled) The Enterprise engines work the same as their artificial gravity... They DON'T work, it's theater! Would an objects shadow still move at the speed of light? In a negaverse, is the speed of Dark the inverse of the speed of Light in our world? If an object WERE going the speed of light, and thus "became" light, would it cast a shadow? I think not, although we could test it with conflicting volumetric lights, perhaps. Do perpendicular volumetric light rays cast shadows of each other? Perhaps finally we'll get to use those obscene parallel lights?