Gravitation and the Universe from large scale-structures

Today, thanks in particular to the results of ESA Planck mission, concordance cosmological model appears be most robust describe evolution and content Universe from its early late times. It summarizes matter, made mainly dark primordial fluctuations generated by inflation around $10^{-30}$ second after Big-Bang galaxies clusters galaxies, 13.8 billion years later, expansion space, with a relative slowdown matter-dominated era and, since few years, an acceleration powered energy. But we are far knowing pillars this which inflation, matter Comprehending these fundamental questions requires detailed mapping our observable over whole cosmic time. The relic radiation provides starting point draw web. JAXA's LiteBIRD mission will map beginning crucial test for (its gravity waves), Euclid recent half part, concept, described White Paper, GAUSS, aims at being fully web up reionization era, linking evolution, tackle disentangle degeneracies persisting between properties, energy, structure growth gravitation large scale.