Abstract
The purpose of the Japan-US Science, Technology and Space Application Program (JUSTSAP) is to share information and achieve mutually beneficial interest and opportunities for specific collaboration in advanced science and technology, mainly in space exploration. The JUSTSAP established in 1990 have formerly consisted of working groups such as disaster observation, satellite communications, small satellites, space environment utilization, space power, space robotics and space policy, where individuals from industries, governments and academia have exchanged ideas and thoughts frankly under a strong support of Hawaii State. The working group of space environment utilization has previously promoted micro-gravity experiments on board the flights of the Space Shuttles; ``Japan-US Thermal Science Acceleration Project'' on STS-95, ``Japan-US Space Protein'' and ``JUSTSAP Space Technology and Research Students'' on STS-107. From 2006, the activities of space environment utilization working group have been expanded in two project teams of the ISS commercialization and the ``Pacific International Space Center for Exploration Systems'' which supports space exploration by simulating as closely as possible a future lunar or Martian settlement.
