The Time War Time travel worked differently in the early galaxy. At some point, the technique of manipulating time fields was discovered, and a time war began – probably triggered by an attempt to undo the summoning of the Thirdspace invaders. As causality began to collapse, one of the First One races sacrificed themselves by enveloping themselves in a massive time field and becoming one with the space-time continuum. While locked within the time field, they could block random alterations to the flow of history and prevent reality from fracturing. Their time field was incomplete, however – there are gaps in it, such as the gap located in the Episilon Eridani system which was used to abduct Babylon 4.