The large-scale structure of the universe—the gigantic, hierarchical cosmic web of structures bound by gravity—is mostly made up of dark matter. The growth of the large-scale structure, from individual galaxies to galaxy clusters, cosmic voids and filaments (Fig. 1), revolves around a competition: Gravity pulls matter together while dark energy pushes space apart. The distribution and evolution history of matter and large-scale structure therefore provide an avenue to study the properties and nature of dark matter, gravity and dark energy.
Click here for original story, Growing in molasses: Cosmic large-scale structure caught growing slower than expected
Source: Phys.org