Those are the meteors, not to be confused with meteoroids or meteorites.

那些就是流，不要和流或陨石搞混。

Meteoroids become meteors when they enter our atmosphere and meteorites when they hit the ground.

流进入球大气层会变成流，撞击变成陨石。

So where do meteoroids like this come from?

那么像这样流是从哪里来呢？

There is also a class of object called meteoroids.

还有一样东西称为“meteoroids（流）”。

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

所有碾碎球彗和小行刚开始都是流。

This particular meteoroid didn't just burn.

这颗特殊流不只是燃烧。

Now, most meteoroids burn up entirely as meteors.

现在，流大部分完全燃烧成流。

The vast majority of meteoroids are small and tend to burn up in our atmosphere.

绝大多数流都很小，而且容易在大气层中燃烧。

And when it's deorbited, it basically acts in the same way that a meteoroid does.

当它们脱离轨道，行为基本上与流相同。

There are a lot of small rocks that are zinging through space. They're called meteoroids.

有许多小岩石在太空中穿梭。它们被称为流。

But sometimes meteoroids travel in packs.

但有流会成群飞行。

The air radiates away this heat, in turn heating up the meteoroid.

空气将热量辐射出去，又反过来加热流。

A meteoroid is just a fancy science word for a small object floating around in space.

流是一个高大上科学术语，指漂浮在太空中小物。

But the small, rocky bodies that cause the lights — those are meteoroids.

但产生光小型岩石天——那些是流。

Very rarely, an incoming meteoroid will survive all the way to the ground and become a meteorite.

非常罕见是，来袭流会一路飞向而未被燃蚀，落到并变成陨石。

Meteoroids turn into meteors once they enter the Earth's atmosphere and start heading for a fall.

流一旦进入球大气层，就会变成流，并开始坠落。

" Chondrite" is just the name given to the class of stony meteoroids that most commonly strike the Earth.

这种陨石常常袭击球， 但是只有碳质球粒陨石带有水你从它名称中也可以得知它们带有很多碳， 它们之所以带有水。

In February 1969, that meteoroid hit Earth's atmosphere.

1969 年 2 月，这颗流撞击了球大气层。

But again, most of these meteoroids are teeny tiny.

但是同样，大部分流都很小。

Additionally, the establishment of underground habitats could provide natural shielding against meteoroid impacts, further enhancing the safety of lunar residents.

此外，建立下栖息可以对流撞击提供天然屏蔽，进一步提高月球居民安全性。