What is Filament (astronomy)?
A '''filament''' is [[hierarchical clustering]] of very many [[Galaxy|galaxies]] due to [[quantum mechanical fluctuations]]<ref>{{Cite web|title=Galactic Filaments {{!}} COSMOS|url=https://astronomy.swin.edu.au/cosmos/G/galactic+filaments|access-date=2020-10-23|website=astronomy.swin.edu.au}}</ref> ==References== {{reflist}} [[Category:Cosmology]]