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长征系列火箭首次发射—1970年4月24日,长征一号火箭将中国首颗自主研制的科学试验卫星成功送入太空,中国成为第五个独立发射人造地球卫星的国家。首颗返回式卫星—1975年11月26日,长征二号运载火箭在酒泉卫星发射中心成功发射中国首颗返回式卫星,卫星在轨运行3日后被成功回收。中国成为继苏、美后,第三个掌握卫星返回技术的国家。
The Long March rocket was first launched - On April 24, 1970, the Long March V rocket successfully launched China’s first self-developed scientific experimental satellite into space. China became the fifth country to independently launch artificial earth satellites. The first satellite of return - On November 26, 1975, the launch vehicle of the Long March II successfully launched China’s first return satellite at the Jiuquan Satellite Launch Center. The satellite was successfully recovered after three days of orbital operation. After becoming the Soviet Union and the United States, China became the third country to master satellite return technology.