In physical cosmology, galaxy filaments, also called supercluster complexes or great walls, are, so far, the largest known cosmic structures in the universe. They are massive, thread-like structures with a typical length of 50 to 80 megaparsecs h-1 that form the boundaries between large voids in the universe.[3] Filaments consist of gravitationally-bound galaxies; parts where a large number of galaxies are very close to each other are called superclusters.
http://en.wikipedia.org/wiki/Galaxy_filament
Ah. I was looking for some science info. OK if you like this, I guess.
KuznVinny 7 months ago