42年前的10月4日,人类第一颗人造地球卫星胜利升空,也正是这一天开创了人类航天史的新纪元,改变了人类社会的思维、工作和生活方式,在人类发展史上具有重大推动意义。迄今为止,世界各国已发射了4800多颗形形色色的卫星,并取得了巨大的社会、经济、科技、军事和政治效益,这些卫星大体可分为技术试验卫星、科学卫星和应用卫星,其中以应用卫星发射数量最多,用途最广泛,目前正在向产业化方向发展。 On October 4, 42 years ago, the victory of mankind’s first man-made satellite was launched. It is also this day that created a new era in the history of human spaceflight. It has changed the thinking, work and life style of human society and has in the history of human development Significantly promote the significance. To date, more than 4,800 satellites of all kinds have been launched and tremendous social, economic, technological, military and political benefits have been launched in all countries in the world. These satellites can be broadly divided into technology experimental satellites, scientific satellites and applied satellites. Among them, The largest number of satellites launched, the most widely used, is currently moving toward industrialization.