目前在气象观测、通讯广播、地球探测和其它科学目的的观测领域中,正广泛地利用空间技术。不久将来,会出现更先进的火箭和卫星技术.此外,空间站的出现使空间利用得到进一步发展并多样化,而且打开完全新的应用领域,其前景无限。为此,日本计划研制更大的、性能更好的运载火箭,以便为这些具育无限能力的空间活动提供完备的技 Space technologies are now being widely used in the field of meteorological observation, communications broadcasting, earth exploration and other scientific purposes. In the near future, more advanced rocket and satellite technologies will emerge, and in addition, the advent of space stations has led to further development and diversification of space utilization and opens up entirely new areas of application with far-reaching prospects. To this end, Japan plans to develop larger and better performing launch vehicles in order to provide comprehensive skills for these space-bound activities with unlimited capacity