Great Sentenses 1

In the paradigm of lambda cold dark matter (ΛCDM), the majority of the matter density of the universe does not couple to electromagnetic fields, leaving it detectable only through its gravitational and possibly weak force interactions. Nonetheless, the effects of dark matter on the visible universe are spectacular, as the steep gravitational potentials of bound dark matter halos channel baryons together, forming the birthplaces of visible galaxies. In this model, the locations, sizes, and merging histories for galaxies are thus intricately connected to the growth of bound dark matter structures.

from Behroozi et al. (2013).