Unveiling the Dark Universe

Recent astrophysical observations have established that our universe
is dominated by dark energy and dark matter, while ordinary matter
makes up only a few percent of its total energy density. The nature of
these two mysterious components is unknown and their origin pose some
of the most pressing questions in fundamental physics. After reviewing
the ingredients of the cosmological model, we will describe the main
physical probes which allow us to accurately measure the geometry,
evolution and large-scale structure of the universe. In particular, we
will describe weak gravitational lensing, a technique to map the dark
matter in the universe. We will then describe the observational status
of these measurements obtained from current surveys. Finally, we will
describe the potential of future experiments designed to study the
dark universe with high precision, highlighting open issues in theory,
data analysis and instrumentation.