Will everyone stop assuming that everything is pepper's ghost? :zipit: Yes it's a great effect, but Disney doesn't just repeat the same success over and over. The Imagineers are too creative for that. Look at how varied the parks and resorts are!
The SM window effect is done by placing an angled painting with backlighting inside a clear, fiber glass sphere.
I do know how it is done. In the space window scenes there is a half circle concave mirror at the bottom of the scenes.The projections you see are under the walkways.The models are stationary and move as you move past the scenes. In otherwords the movement is an illusion.The concave mirror reflects the image as you move,you see the right side of the model to the left side.To give you an idea of what I mean,stand in front of say your car from the side.Start at the front side close to the car,and walk in a half circle out away from the front out to the center and back in to the back of the car.The star scenes above them are static.