“天空实验室”是美国第一个航天站,于1973年5月15日由“土星”5号火箭送入太空。该站总长36米,最大直径6.5米,重约90吨。1973年5、7和11月,相继有三批,每批各3名航天员分乘指令服务舱入站工作28、59和84天;对太阳、地球和彗星等进行了大量观测,共获得太阳和地球照片18、4.3万多张、资料磁带10万多米。1979年7月11日,天空实验室坠入大气层烧毁。 “Skylab ” is the first space station in the United States. It was put into space by a “Saturn” rocket 5 on May 15, 1973. The station total length of 36 meters, a maximum diameter of 6.5 meters, weighing about 90 tons. There were three batches in succession in May, July and November 1973, with 28, 59 and 84 days for each of the three astronauts attending the command service cabin. A large number of observations were made on the sun, earth and comets to obtain the sun 18.43 million photographs of the Earth and over 100,000 tapes of information. July 11, 1979, Sky Labs crashed into the atmosphere.