So quasars are spewing out charged particles.

所以体喷出带电粒子。

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体。

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

他们将这体亮度与如今存在一体进行了比较。

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

体如何产生无线电波，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.

研究人员发现，拥有体系与他系互动或碰撞可能性约是他系三倍。

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

幸运是，这个名字被缩短为体，不得不说，这个名字要酷得多。

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

在许多系和体中确实观察到了这种喷流。

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

英国科学家表示，宇宙中最亮、最天体体可能是系合并结果。

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

体，能量以宇宙自鼎盛时期以来从未见过速度喷射。

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

体是完美背光源。它们亮度可以是整个系数千倍。

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或体等物体；然而，他们偶尔也会搜索外生命频率。

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

一种理论认为这是由体电离回波引起。

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

体要明亮得多，所以科学家们能够从更远更深地方观察到过去活动。

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

体现在被认为是吞噬宿主系拥挤中心物质黑洞。

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

体是宇宙中最明亮事物之一，科学家们用它们作为“时钟”来记录过去时间。

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).

困难词：外人（来自地球之外）、喧闹（量噪音）、体（产生量能量和光非常恒）。

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.

这包括活跃系核和体，它们被认为是超质量黑洞吸积盘，以及被认为来自中等质量黑洞超亮X射线源。

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.

世界上差不多所有望远镜都旨在观察遥远天空中极小东西，观察一颗体，或寻找黑洞，或观察一个遥远系。

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，不知道夸克和体有什么区别，不理解地质学家怎么只要看一眼峡谷壁上一层岩石，就能说出它年龄--我确实什么也不知道。