Dark energy, gravitation and the Copernican principle

Understand

This text aims at discussing the relations between the cosmic acceleration and the theory of gravitation and more generally with the hypotheses underlying the construction of our cosmological model, such as the validity of general relativity on astrophysical scales and the Copernican principle.

• We hope to illustrate that cosmological data have now the potential of testing these hypotheses, which go beyond the measurements of its parameters.