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望远镜是观测天体的重要工具,可以说,没有望远镜的诞生和发展,就没有现代天文学.随着望远镜各方面性能的改进和提高,天文学也正经历着巨大的飞跃,迅速推进着人类对宇宙的认识.下面介绍几种当代最先进的望远镜.哈勃空间望远镜它是在太空轨道上环绕着地球运行的望远镜,长13.3米,直径4.3米,重11.6吨,造价近30亿美元,1990年4月25日由美国航天飞机送上太空,以2.8万千米的时速沿轨道运行.太空望远镜的出现使天文学家成功地摆脱地面条件的限
Telescopes are an important tool for observing the celestial bodies and can be said that there is no modern astronomy without the birth and development of telescopes. As the performance of telescopes is improved and improved in various fields, astronomy is also undergoing a tremendous leap forward in rapidly advancing human beings’ Recognition. Here are some of the most state-of-the-art telescopes. The Hubble Space Telescope, a telescope orbiting the Earth in space orbit, is 13.3 meters long and 4.3 meters in diameter weighing 11.6 tons and costs nearly $ 3 billion. In 1990 4 The space shuttle was brought into space on January 25 and was orbiting at a speed of 28,000 km. The advent of space telescopes enabled astronomers to successfully overcome the limitations of ground conditions