This cannot be correct unless Unoosa considers aliens to be near-earth objects (like comets and asteroids).

如果外太空司把近地天体(如彗星和小行星)当成“近地物体”的话，那么这个说法才可以说得通。

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Stars would stay fixed, but objects like comets, asteroids, and planets moved.

通过这种方法可以观察到，恒星是固定不动的，而像彗星、小行星和行星这样的物体都在移动。

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We will learn about strange objects called comets and asteroids, and about mysterious places like the asteroid Belt, the Kuiper Belt, and the Oort Cloud.

我们将学习彗星和小行星奇怪物体，以及一些神秘的地方，如小行星带，柯伊伯带和奥尔特云。

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"The guess is that both the water and the dark material, which we think is organic-rich material, were delivered by the same objects impacting Mercury: some mixture of comets and the kinds of asteroids that are rich in organic and volatile material like water ice, " Prof Solomon said.

BBC: Mercury's water ice at north pole finally proven