Hyperspace warp

The greatest discovery that enabled space travel is the gravitic drive. When activated it creates an elliptical quantum wavefront around the warpcraft. A massive polarized gravity field surrounds the wavefront, drawing it forward at seemingly impossible speeds that can allow warpcraft to travel across the length of the galaxy in under a year. The quantum wavefront is, however, very fragile. Although warpcraft are near impossible to hit while in transit, they cannot interact with the outside world as a general rule. Thus warfare cannot occur while either side is in warp space.