The Next Generation Virgo Cluster Survey

International audience; The Next Generation Virgo Cluster Survey (NGVS) is a CFHT MegaPrime large program to survey the Virgo Cluster from its core to virial radius, for a total coverage of 104 square degrees. Over the next four years, the survey will perform deep imaging (10 sigma detection for point sources of 25.7 mag in the g-band) in five band-passes (u*,g',r',i',z'), thereby superceding all optical studies of this uniquely important system. The program's main scientific objectives are: the characterization of the faint-end shape of the galaxy luminosity function, the characterization of galaxy scaling relations over a factor 107 in mass, the cluster/intracluster medium/galaxy connection, the role of environmental effects in galaxy evolution,and the fossil record of star formation and chemical enrichment in dense environments. Numerous ancillary projects - from a survey of the Galactic halo to a cosmic shear measurement of the matter power spectrum on large scales - will also be enabled. Details about the survey can be found at http://astrowww.phys.uvic.ca/ lff/NGVS.html