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

那些就是流星，不要和流星体或陨石搞混。

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

流星进入地球大气层时会变成流星，撞击地面时变成陨石。

So where do meteoroids like this come from?

那么像这样的流星体是从哪里来的呢？

There is also a class of object called meteoroids.

还有一样东西称为“meteoroids（流星体）”。

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

所有碾碎地球的彗星和小行星刚开始都是流星体。

This particular meteoroid didn't just burn.

这颗特殊的流星体不只是燃烧。

Now, most meteoroids burn up entirely as meteors.

现在，流星体的大部分完全燃烧成流星。

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

绝大多数的流星体都很小，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.

当它们脱离轨道时，行为基本上与流星相同。

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。它们被称为流星体。