So quasars are spewing out charged particles.

所以类星体喷出带电粒子。

We detect quasars with radio telescopes and radio antenna.

我们用射电望远镜电天探测到类星体。

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。

Happily, the name was shortened to quasar, which, you'll admit, is way cooler.

幸运的是，这个名字被缩短为类星体，不得不说，这个名字要酷得多。

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

类星体如何产生电波，为什么我不能听它们？

Researchers found that galaxies hosting quasars are around three times as likely to be interacting or colliding with others.

研人员发现，拥有类星体的星系与其他星系互动或碰撞的可能性大约是其他星系的三倍。

Such jets are indeed observed in a number of galaxies and quasars.

在许多星系类星体中确实观察到了这种喷流。

One theory is that this is caused by a quasar ionization echo.

一种理论认为这是由类星体电离回波引起的。

Quasars are much brighter, so scientists are able to observe the activity from much further away and deeper in the past.

类星体要明亮得多，所以们能够从更远更深的地方观察到过去的活动。

12. quasars, which fountain energy at rates the universe has never seen since their heyday.

类星体，其能量以宇宙自鼎盛时期以来从未见过的速度喷射。

And quasars are the perfect backlight. Their luminosity can be thousands of times that of whole galaxies.

类星体是完美的背光源。它们的亮度可以是整个星系的数千倍。

Radio telescopes usually measure objects like stars or quasars; however, they occasionally search frequencies for alien life.

射电望远镜通常测量恒星或类星体等物体；然而，他们偶尔也会搜索外星生命的频率。

Scientists in the UK say quasars, the brightest and most powerful objects in the universe, may be the result of galaxies merging.

英国表示，宇宙中最亮、最强大的天体类星体可能是星系合并的结果。

13. quasars are now thought to be black holes devouring material in the crowded centers of their host galaxies.

类星体现在被认为是吞噬宿主星系拥挤中心的物质的黑洞。

Quasars are some of the brightest things in the universe and scientists use them as " clocks" to keep track of time in the past.

类星体是宇宙中最明亮的事物之一，们用它们作为“时钟”来记录过去的时间。

Difficult words: extraterrestrial (from outside Earth), ruckus (a lot of noise), quasar (a very large star that makes a large amount of energy and light).

困难的词：外星人（来自地球之外）、喧闹（大量噪音）、类星体（产生大量能量光的非常大的恒星）。

These include active galactic nuclei, and quasars which are thought  to be the accretion disks of supermassive black holes, and also ultraluminous x-ray sources  thought to be from intermediate mass black holes.

这些包括活跃的星系核类星体，它们被认为是超大质量黑洞的吸积盘，以及被认为来自中等质量黑洞的超亮X射源。

Almost all the telescopes we have in the world are designed to peer at very tiny little pieces of the sky way off in the distance to see a quasar or hunt for black holes or look at a distant galaxy.

世界上差不多所有的望远镜都旨在观察遥远天空中的极小东西，观察一颗类星体，或寻找黑洞，或观察一个遥远的星系。

I didn't know what a proton was, or a protein, didn't know a quark from a quasar, didn't understand how geologists could look at a layer of rock on a canyon wall and tell you how old it was, didn't know anything really.

我不知道什么是质子，什么是蛋白质，不知道夸克类星体有什么区别，不理解地质怎么只要看一眼峡谷壁上的一层岩石，就能说出它的年龄--我确实什么也不知道。