The science instrument that replaced the Goddard High Resolution Spectrograph was the Space Telescope Imaging Spectrograph, or STIS.
STIS was installed on the Hubble Space Telescope during Servicing Mission 2 in February 1997. It replaced the GHRS and the Faint Object Spectrograph, expanding Hubble’s spectroscopic capabilities across ultraviolet, visible, and near-infrared wavelengths.
The mission also installed NICMOS, the Near Infrared Camera and Multi-Object Spectrometer. NICMOS replaced the Faint Object Spectrograph in the mission’s instrument exchange, while STIS was the direct replacement associated with the GHRS.
STIS combines spectroscopy with imaging capabilities. It has been used to study galaxies, interstellar gas, stellar systems, planetary atmospheres, and other astronomical targets. Although a power failure made it temporarily inoperable in 2004, astronauts repaired it during Servicing Mission 4 in 2009.