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人造卫星是一种环绕地球在空间轨道上运行(至少一圈)的无人航天器,基本按照天体力学规律绕地球运动.人造卫星是发射数量最多、用途最广、发展最快的航天器,约占航天器发射总数的90%以上.如今人造卫星与我们的生活联系
The artificial satellite is a kind of unmanned spacecraft that runs around the Earth in space orbit (at least one circle) and moves around the earth basically according to the laws of celestial mechanics.Satellite is the spacecraft with the largest number, the most extensive use and the fastest development, Accounting for more than 90% of the total number of spacecraft being launched. Now satellites are linked to our lives