"When the wormhole collapsed, it was devastating for the New Eden system, and destoyed an enormous amount of knowledge. Among that knowledge was the location of Earth. Even if we had known where Earth was, it would have to be broadcasting a cynosaural field in order for us to jump to it, and we have seen no evidence of such fields being produced by anyone other than us. The general assumption so far has been that Earth was destroyed when its end of the wormhole collapsed."