想到一件物品在太空中停留那么久似乎令人惊讶,但目前仍在轨道上的最古老的卫星——先锋1号——在2018已年满60岁。
It might seem surprising to think about an item staying in space for that long, but the oldest satellite still in orbit—Vanguard 1—turned 60 in 2018.
在最粗糙的情况下,任何物体只要被引导到某枚卫星的轨道上,都能成为一件太空武器。
In its crudest form, any object can become a space weapon if directed into the path of a satellite.
这让很多人推想可能太空里有几十个风干了的动物尸体仍然在轨道上绕行。
This leads many to theorize that perhaps dozens of mummified animals are still making the orbital rounds up there.
If you escape the pull of gravity, your spaceship will be off, won't be orbiting the Earth.
如果你完全脱离重力,太空船早就飞得没影了,而不是在轨道上运行
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