The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
人造卫星的轨道由于大气阻等因素的摄动,其形状近点位置将不断改变。
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On October 4,1957, when Sputnik went into orbit, people were so upset.
1957 年 10 月 4 日,当人造球卫星进入轨道的时候人异常不满。
The first artificial Earth satellite in the world has now been created. This first satellite was today successfully launched in the USSR.
“世界上第一颗人造球卫星已经诞生,今天,苏联成功发第一颗卫星。”
Jocelyn Bell Burnell The launch in 1957 by the Soviet Union of the first artificial Earth satellite, Sputnik 1, was a turning point in history, both politically and scientifically.
乔斯林·贝尔·伯内尔 1957年, 苏联发颗人造球卫星“斯普特尼克1号” ,这一事件在历史上具有转折意义,无论是在政治层面还是科学领域。
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