Celestial bodies always moved. That was normal. Nothing ever stood still in the universe.
However, Khan struggled to come to terms with the fact that one of the distant, dark stars grew closer, seemingly reacting to the Leviathan-class ship's invasion.
At first, Khan thought his eyes were lying to him. After all, he was in a different dimension. His perception and sense of distance could be off. Space could also work differently there, making that scene nothing more than a trick of the light in response to the ship's advance.
Nevertheless, those hopes soon crumbled. The giant ship was indeed heading for the distant stars, but one of those had also started to move, experiencing a burst of speed that released more energy than Khan could conceive.
That confirmation didn't come from Khan's perception. The celestial body was still too far for that, and his senses had nothing to attach themselves to expand their range.
