GEPI

The Maunakea Spectroscopic Explorer (MSE, formerly Next Generation CFHT) is a project to upgrade the CFHT into a survey telescope with a 10-meter mirror and a dedicated, heavily multiplexed, wide-field spectrograph with a wavelength coverage of 0.4-1.3 micron and multiple spectral resolutions. I will present the details of the project as well as the science that could be achieved with MSE, unveiling the properties of the faint universe, whether they relate to the origin and diversity of stellar systems, Milky Way archaeology at the earliest time, galaxy evolution across cosmos times, or illuminating the dark universe.