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.

我们用射电望远镜和无线电天线探测到类星体。

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

他们将这些类星体亮度与如今存些类星体进行了比较。

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？

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，拥有类星体星系与其他星系互动或碰撞可能性大是其他星系三倍。

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

幸运是，这个名字被缩短为类星体，不得不说，这个名字要酷得多。

Observations of bright radio sources, like quasars and radio galaxies, were only being found at large distances from the Milky Way.

对明亮射电源观测，如类星体和射电星系，只离银河系很远才被发现。

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

许多星系和类星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、最强大天体类星体可能是星系合并结果。

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.

类星体是完美背光源。它们亮度可以是整个星系数千倍。

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星或类星体等物体；然而，他们偶尔也会搜索外星生命频率。

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

种理论认为这是由类星体电离回波引起。

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

类星体要明亮得多，所以科学家们能够从更远更深观察到过去活动。

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

类星体现被认为是吞噬宿主星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.

类星体是宇宙中最明亮事物之，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：外星人（来自球之外）、喧闹（大量噪音）、类星体（产生大量能量和光非常大恒星）。

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观察遥远天空中极小东西，观察颗类星体，或寻找黑洞，或观察个遥远星系。

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，不知道夸克和类星体有什么区别，不理解质学家怎么只要看眼峡谷壁上层岩石，就能说出它年龄--我确实什么也不知道。