%0 Conference Proceedings %T Dark Energy: Beyond General Relativity? %+ Laboratoire de Physique Théorique et Astroparticules (LPTA) %A Polarski, D. %Z Invited talk at Albert Einstein's Century international conference, 18-22 July 2005, Paris, France %F Invité %< avec comité de lecture %Z PTA/06-32 %( Albert Einstein Century International Conference %B Albert Einstein's Century international Conference %C Paris, France %Y Jean-Michel Alimi, André Füzfa %I American Institute of Physics %3 Conference Proceedings %N 861 %P 1013-1018 %8 2005-07-18 %D 2005 %Z astro-ph/0605532 %Z Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] %Z Sciences of the Universe [physics]/Astrophysics [astro-ph]Conference papers %X The late-time accelerated expansion of the universe is a major challenge for cosmology. It may well be that a solution to this problem will require a theory of gravitation beyond General Relativity. It is emphasized that precision cosmology will strongly constrain the possibilities by using observational data probing the background as well as the inhomogeneities. %G English %L in2p3-00115601 %U https://hal.in2p3.fr/in2p3-00115601 %~ IN2P3 %~ LPTA %~ CNRS %~ UNIV-MONTP2 %~ UNIV-MONTPELLIER %~ UM1-UM2