Yes, it was either just before the top or just after. I don't remember exactly where it was located but it disappeared when they changed the ending so I would have to guess that it was after, on the way back down.
As far as the top goes, I first went on SSE in about 1989 and as I remember it was just the projection of the earth, but I could be wrong. I know they had space stuff at one time, so I might have seen that and it just didn't register. I have always been mesmerized by the earth projection to the point that I have hoped that the ride would stop when we got there. I love the image it creates, so much so that I might have just ignored the space junk that people say was there and I have seen pictures of someplace.