Hang on a bit.........if my poor grey matter understands what some of you are saying, then if a rocket DID NOT shut down after attaining escape velocity (and assuming an inexhaustable fuel supply), it would continue to accelerate in this void ultimatley reaching the speed of light?
Nah! there would have to be some friction or something offered at some point by what little is out there and set up "drag" to retard its progress - wouldn't there?.