The Space Telescope Science Institute, the organization responsible for the scientific mission of the Hubble Space Telescope, maintains its headquarters in this 1984-85 office building on the Homewood Campus of the Johns Hopkins University. Two additions to the building, completed shortly after its initial construction, took the site to its maximum capacity, and subsequent adjustments have, till now, been limited to internal reconfiguration and re-assignment.
The present project was undertaken in part to relieve the crush of scientists and administrators forced into ever tighter quarters as the Hubble has continued to fly, and in part as a component of a multi-faceted solution to chronic water leaks through the decks and exterior walls of the building. The work reconfigures the top floor of the building, takes over an underused and leak-prone exterior deck to provide new offices and an improved library and conference space.