Yeah, we drove over the mountain see the comets.

我们开车去山顶看。

He has, in fact, discovered four comets.

事实上，他之前已经发现了4颗。

It can not be a comet; for comets have tails, said a third.

“它不可，因为有长长的尾巴，”第三个人说。

Probably the most famous comet in history is Halley's comet.

可历史上最著名的就哈雷了。

Here's to the comet. - The comet. And the comet.

为干杯 - 敬 还有。

This is where some comets come from.

这就的来源。

There's a comet headed directly towards Earth.

有一颗正朝地球飞去。

All Earth-crushing comets and asteroids start out as meteoroids.

所有碾碎地球的和小行刚开始体。

So you gonna, uh, watch the comet later?

所以你一会要，呃，看吗？

Yeah. I don't think it's the comet.

我觉得跟没关系。

And like comets, they can crash into planets, causing devastation.

如一样，它们可会撞击行并造成灾难。

Manx comets and their kittens suggest this is exactly what occurred.

马恩岛猫和它们的小猫表明，这些假说成立的。

Meteors, asteroids, and comets struck my surface for a billion years.

从十亿年前开始，、小行和不断撞击我。

Still, even seen from earth, comets can be spectacular to behold.

同样的，就算从地球上看起来，依然个奇观。

Haley's Comet, now NASA knows of about 3,600 other comets than that one out there.

除了哈雷，科学家知道的其他还有3600颗。

Instead they think it might be a small but otherwise kind of typical comet rich in water ice.

相反，他们认为它可一颗小型且富含水冰的典型。

I'm found inside the Kuiper belt with comets and the asteroids.

我生活在和小行组成的柯伊伯带里。

Asteroids, moons and comets have all been added to the stamp album.

小行，卫和已经增加到集邮册里。

Here's why this is happening. There's a comet named Thatcher.

下面来解释一下发生天琴座雨的原因。有一颗名为“佘契尔”的。

I hope you enjoyed learning about comets today.

希望你喜欢今天关于的介绍。