This would take millions of years and involve large objects coming just close enough to not collide with earth.
这需要数百万年时间,并得让足够大的物体离地球够近却不能撞到地球。
Close enough, four meters, just for the idea.
足够接近4米,是这样的。
They are rare and form within just a few hundred thousand years, so it's unlikely that astronomers will spot one that is condensing and close enough to observe.
它们很稀有并只在几十万年内形成,所以天文学家很没可能发现一颗正在浓缩且又非常近可以观察的恒星。
We're still close enough to the summer that the air is not just filling us up with extra static electricity, so it's a little more challenging here.
我们现在离夏天更近了,这样空气中不总是,充满额外的静电,所以这时做实验,会有一些挑战性。
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