[quote]I'm pretty positive I remember Auntie Dot telling Noble Team that there was an abnormal amount of Slipspace Anomalies above Reach, actually turning out to be a Covenant fleet.[/quote][i]"Slipspace rupture detected. Slipspace rupture detected. Slipspace rupture detected."[/i] Not anomalies. [quote]It may not have a Slipspace drive, but it does still have power and most likely engine thrust if the ship managed to slingshot away from the planet. 20+ years is nothing to the Flood, so while the crew jettisoned themselves out, the Flood assumed direct control of the rest of the ship and suited it to their own ends. Without anyone even knowing of their existence in deep space, its entirely possible they made their rounds and have been causing some trouble. There was and still is nobody out there to stop them as the exact location of the SoF is still unknown to Humanity.[/quote]I'm not saying it can't or won't come back to UNSC space. I said that in response to you saying the Spirit making random slipspace jumps could be causing the anomalies. It can't, because it doesn't have a slipspace engine.