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哈勃空间望远镜(Hubble Space Telescope)将于1989年12月由“发现者”号航天飞机送人轨道,较原计划拖后了许多年。HST是美国航空和航天局(NASA)制造的最先进,也是最为昂贵的科学卫星。它的2.4米直径的反射天线可说是当今世界最完善的天文反射天线。在地球大气层模糊效应区之外,HST的探测距离较地面最强大的望远镜远5倍,它提供的影像也将较普通方法提供的清晰10倍。在可望受到赞扬的同时,HST的发展过程也反映了NASA空间科学研究方面的错误所在,即过于信赖航天飞机,热衷于大计划和管理紊乱,致使科学计划的效率低下,成本上升。当前,正对美国空间计划的长期目标展开讨论。美国是否有必要把载人飞船送上火星?是否有必要建立有人的月球站?是否应建造空间站?如果
The Hubble Space Telescope will be put on orbit by Discovery’s space shuttle in December 1989, dragging many years behind the original plan. HST is the most advanced and expensive science satellite manufactured by NASA. Its 2.4-meter-diameter reflector antenna is arguably the most complete astronomical reflector antenna in the world today. Outside the Earth’s Blurred Atmosphere, the HST’s detection range is five times as far as the most powerful telescope on the ground, and it provides images 10 times as clear as conventional methods. Hoping to be praised, the development of HST also reflects the mistakes made by NASA in space science research. That is, too much trust in the space shuttle is keen to plan and manage the disorder, resulting in the inefficiency and cost of science programs. Currently, discussions are ongoing on the long-term goal of the United States space program. Is it necessary for the United States to send the manned spacecraft to Mars? Is it necessary to establish a manned lunar station? Should a space station be constructed? If