Prospects of the Future Microgravity Science in Japan

This paper describes past experimental results, which would be excellent in each scientific disciplines such as crystal growth, fluid science and so on. The emphasized scientific target in the future which was established Space Utilization Science Committee is also noted. Meaning of Microgravity utilization is also emphasized that the concept of microgravity utilization should be modified. Ground base experiments are most important items compared to microgravity experiments. Microgravity experiments should be done to make clear the unknown scientific area, which would be picked up under ground base experiments. International collaboration is also emphasized to get several kinds of flight opportunities such as sounding rocket, recovery satellite and so on. Microgravity experiments should be done by most suitable method with the scientific purpose as well as experimental technology. For instance, ISS with crews is not suitable opportunity for combustion experiments, because many safety issues prevent most favorite experiments parameter. The systematic experimental results should be target for the time being, because previous experimental results were scattered as point and line in unknown scientific area. Therefore, we need to forces on to get systematic scientific result from microgravity experiments, which contribute to improve the science including ground base.