As such, gravity is not a force, but a change in the local geometry of space - time. (scientificamerican.com)
Exhibition detail of Geometry of Space at HOME, Manchester, UK, 2008. (bombmagazine.org)
From galaxy distances, you are also able to answer some cosmological questions like the large - scale geometry of space, the density of the universe needed to stop the expansion (called W [«Omega»]-RRB-, age of the universe, and whether or not the universe will keep expanding. (astronomynotes.com)