In 2372, the USS Voyager encountered such a divergence field in the Delta Quadrant, when it entered a plasma drift in an attempt to escape a Vidiian starship. This resulted in the existence of two duplicate Voyagers existing in the same point in spacetime, whose crews were initially unaware of each other due to both ships existing slightly out of phase with each other. Because the antimatter in Voyager's warp core was not duplicated, both ships experienced what they believed to be an unexplained drain on their antimatter supply, as both ships shared the same source of energy. Both crews came up with the idea of infusing the warp core with repeated proton bursts to keep their engines running. However, one Voyager began emitting the bursts before the other, causing serious damage to the othe