One of my projects has its finale set inside a space station orbiting New Earth. The problem was, although I had a idea for the design, I couldn't put it down on paper.
In the end I managed to kill two birds with one stone: I used LDD to experiment with designs and eventually build a prototype model, and also entered the model in a Eurobricks competition. (It's in the judging phase, and my entries are up against some seriously good efforts from other, more talented and more respected members; I'm guessing I'll get zero points!)
What you're basically seeing here is a representation of the final space station design, created as best as I could with Lego bricks.
The blue thing is a bomb being developed on the space station, which would eventually be launched.