但是，也可能有外星生物在不断往地球发送信号的。
It is, however, also possible that someone is actively trying to send signals to the Earth.
换句话说，不管人们往地球上扔什么，地球都会以自己的节奏和方式将问题解决掉。
Whatever humans throw at it, in other words, Earth will fix things in its own time and its own way.
他们提出，在这颗行星的轨道上，它会定期地进入奥特云，扰乱那里很多彗星的轨道，并且使得其中一些彗星掉落到去往地球的方向上。
They suggest that during its orbit it would regularly enter the Oort cloud, jostling the orbits of many comets there and causing some to fall toward Earth.
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