Complex sentence: The robot detects the intruders and in response redirects the rocket from aimless wandering, sending it on a course, and the shock of change causes the Doctor to hit his head, briefly concussing him.
Split into simpler sentences: The robot detects the intruders and in response redirects the rocket from aimless wandering. The shock of a course change causes the Doctor to hit his head, briefly concussing him.