Testing gravity and clustering at large scales from redshift z=1

The discovery of the accelerating expansion of the Universe a decade ago established a new paradigm in Cosmology. The origin of the 'dark energy' which drives this acceleration is not yet understood. In this thesis, we analyzed the statistical distribution of matter mapped by a new, deep galaxy survey (The WiggleZ Dark Energy Survey) to test dark energy models using the formation and evolution of cosmic structure over the last 7 billion years. We find that the properties of dark energy are consistent with a uniform 'cosmological constant' matter-energy filling the Universe, rather than demanding a change to standard Gravity.