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A stable time-fuel optimal spiral orbit for the rendezvous of an inspector satellite is put forward.
本文设计了一条稳定的燃料-时间优化回收轨道。
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In this case, the orbit of the rotating asteroid will very slowly spiral in toward the sun.
在这样的情况下，旋转小行星的运行轨道将非常缓慢地向朝着太阳的方向盘旋。
The earth's death spiral will last about 2m years, as its orbit shrinks and the sun continues to expand.
ECONOMIST: To the ends of the earth
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