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

那些是流星，不要和流星体或陨石搞混。

What we see today are the ones that, coincidentally, got things just right.

巧合的是，我们今天看到的是那些把条件整合得恰到好处的星体。

There is also a class of object called meteoroids.

还有一样东西称“meteoroids（流星体）”。

And when Strange takes on his astral form, the visual effects team backlit everything.

当奇异博士呈现出他的星体形态时，果团队用背景光照亮了片场。

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

例如，这些数据涵盖了1千多个爆发星体，或称超星体的信息。

If one of these rocks hit's the earth's atmosphere, it becomes a meteor.

如果其中一个流星体撞上了地球的大气层，变成流星。

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

真有趣。让我们认星体都是和我们相关的。

Planetary scientist Bill Hartmann, first proposed this theory after NASA's first mission to the Moon.

星体研究专家比尔首先发表了这样的理论，在美国国家航空航天局（NASA）的第一次登月任务之后。

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，什么我不能听们？

So quasars are spewing out charged particles.

所以类星体喷出带电粒子。

In fact, only a handful of the hundreds known are actually circular!

事实上，数百种已知的这些星体中，只有少数是圆形的！

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

“太空中有大量的‘野生’星体存在。”

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

他们将这些类星体的亮度与如今存在的一些类星体进行了比较。

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。

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

1969 年 2 月，这颗流星体撞击了地球大气层。

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。

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。们被称流星体。

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大质量星体爆炸后残留下来的物体，这些星体曾经是超新星。

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

这种水母星系的圆盘由星体组成，像银河系长长的蓝色卷须一样。

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。