I don't know if Space Engine models the large scale structure of the universe. I mean on the scale of filaments, or the Sloan Great Wall. It would be good if it did, or if the interface could make some of that detail available to the user.
Anyway - this paper may be of interest. More structure has been discovered.
http://arxiv.org/PS_cache/arxiv/pdf/1105/1105.1632v1.pdf
dM