I agree with rreynolds above; often one has to cheat as to scales. It's the same with buildings. If you want a skyscraper in the distance, do you really want an object 200 times bigger than a Poser figure in your scene? However, I also feel that trying to do scenes in outer space with ships and all is really stretching Poser's capabilities a bit too far. Maybe you can do it with a real effort, but it isn't the best tool for the job.