The ship moved so smoothly that her onward motion was imperceptible to the senses of men, as though she had been a crowded planet speeding through the dark spaces of ether behind the swarm of suns, in the appalling and calm solitudes awaiting the breath of future creations.
Gives a sense of timelessness and universality. The comparison of the ship to a "crowded planet" emphasizes its isolation and insignificance in the vastness of space.
The phrase "appalling and calm solitudes" suggesting a sense of awe-inspiring emptiness and quietness. The image of the ship speeding through the darkness, awaiting the "breath of future creations," adds mystery and anticipation.