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。

They compared the brightness of those quasars to some that exist today.

他们将些类星体的亮度与如今存在的一些类星体进行了比较。

For example, the data include information about more than 1,000 exploding stars, or supernovas.

例如，些数据涵盖了1千多个爆发星体，或称为超星体的信息。

Neutron stars are the extremely dense remnants of supermassive stars that have exploded as supernovae.

中子星是极其密集的超质量星体爆炸后残留下来的物体，些星体曾经是超新星。

So quasars are spewing out charged particles.

所以类星体喷出带电粒子。

Some of them are very massive and incredibly luminous.

其中有些星体非常巨，亮度惊人。

There is also a class of object called meteoroids.

还有一样东西称为“meteoroids（流星体）”。

It says the object must have three things to be called a planet.

其规定星体须具备一下三点才能被称作是行星。

So where do meteoroids like this come from?

那么像样的流星体是从哪里来的呢？

We detect quasars with radio telescopes and radio antenna.

我们用射电望远镜和无线电天线探测到类星体。

But, with so many objects in space, what makes a planet, a planet?

但太空中有么多星体，究竟什么才是行星呢？

Tripling the number of known stars to nearly 3000.

编录了近三千颗星星 已知星体数增加了三倍。

How interesting. It makes us think that the stars are all about us.

真有趣。它让我们认为星体都是和我们相关的。

In our Solar System, there's simply no bigger star than the Sun.

在我们的太阳系，简直没有比太阳更的星体了。

But perhaps the most interesting place is somewhere that's much closer to home.

不过，可能最有趣的星体是在离地球更近的地方。

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。

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。

" There is tons of wild stuff going on in space, " noted Burdge.

“太空中有量的‘野生’星体存在。”

How can quasars produce radio waves and why can't I listen to them?

类星体如何产生无线电波，为什么我不能听它们？

Such a galaxy has a disk of stars, like our Milky Way—plus long blue tendrils.

种水母星系的圆盘由星体组成，就像银河系长长的蓝色卷须一样。