VIRUS is a massively replicated multi-object spectrograph being built for the Hobby-Eberly Telescope (HET) in support of HETDEX (Hobby-Eberly Telescope Dark Energy Experiement).  VIRUS consists of 156 identical fiber-fed spectrographs with low resolution (R~700) and blue-end wavelength coverage (350-550nm) to identify Lyman alpha emitting galaxies and map dark energy evolution at 2 < z < 4.VIRUSlogo