One problem with the collision hypothesis is the question of how a satellite formed in this way could have settled into the nearly circular orbit that the Moon has today.
碰撞假说的一个问题是，以这种方式形成的卫星是如何在月球现在的近乎圆形的轨道上运行的。
The space station is in no danger of entering the main debris clouds because it is orbiting just 220 miles above Earth, or 271 miles below the orbit of the collision.
由于国际空间站距离地面只有220英里，且位于卫星相撞轨道下方271英里处，因此主碎片云进入国际空间站的机率很小。
One planet, about the size of Mars, probably had an orbit which crosses Earth's, and eventually a collision occurred.
一个大小与火星相当，轨道可能与地球轨道交叉的行星，最终与地球发生了碰撞。
In that scenario, each collision would generate new debris, causing more debris-generating collisions, until low Earth orbit becomes hopelessly clogged and unusable by spacecraft or even satellites.
在这种情况下，每一次碰撞会产生新的碎片，引发更多产生碎片的碰撞，直到低地球轨道出现无可救药的堵塞，航天器甚至卫星均无法使用。
While that won't be enough to knock it out of orbit, it could be sufficient to avoid a collision with a space station or satellite.
尽管这并不足以使太空垃圾偏离轨道，但已足够防止它们和人造卫星或者太空站相撞。
He ran it through MPC's orbit-projection software, which can tell how close an asteroid will come to Earth, and phoned Chesley to alert him of an impending collision.
他立即运行中心的轨道预测软件，计算小行星离地最近距离，然后打电话警告切斯利一场即将发生的小行星撞地球。
Once the collision is over, the orbits return to their normal shape, and electrons have to absorb energy to stay in the new higher orbit.
碰撞一旦结束，轨道就恢复到正常的形状，而电子必须吸收能量才能保持在新的高轨道上。
The official said that U. S. "space tracking sensors" confirmed that the satellite is no longer in orbit and that the collision produced "hundreds of pieces of debris, " that also are being tracked.
该官员说美国“太空跟踪传感器”证实该卫星已不在轨道上，而成了数百块碎片。
The official said that U. S. "space tracking sensors" confirmed that the satellite is no longer in orbit and that the collision produced "hundreds of pieces of debris, " that also are being tracked.
该官员说美国“太空跟踪传感器”证实该卫星已不在轨道上，而成了数百块碎片。
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