The Naval Research Laboratory (NRL) is developing an experiment to deploy high temperature superconducting (HTS) devices and components in space. A variety of devices, primarily passive microwave and millimeter wave components, has been procured and will be integrated with a cryogenic refrigerating and data acquisition system to form the space package, which will be launched late in 1992. This space experiment will demonstrate that this technology is sufficiently robust to survive the space environment and that has the potential to improve the operation of space systems significantly. The devices for the initial launch (HTSSE-I) have been received by NRL and evaluated electrically, thermally and mechanically and will be integrated into the final space package early in 1991. The performance of the devices will be summarized and some potential applications of HTS technology in space systems will be outlined.