The Naval Research Laboratory (NRL) is exploring the feasibility of deploying high temperature superconductivity (HTS) devices and components in space. A variety of devices, primarily passive microwave and millimeter wave component, have been procured and well integrated with a cryogenic refrigerator system and data acquistion 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 has the potential to significantly improve space communications systems. 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 system will be outlined.