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？

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。

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。

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.

世界差不多所有的望远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.

我不道什么是质子，什么是蛋白质，不道夸克和类星体有什么区别，不理解地质学家怎么只要看一眼峡的一层岩石，就能说出它的年龄--我确实什么也不道。

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。

We detect quasars with radio telescopes and radio antenna.

我们用射电望远和无线电天线探测到类星体。

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、最强大的天体类星体可能是星系合并的结果。

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的地方观察到过去的活动。

So quasars are spewing out charged particles.

所以类星体喷出带电粒子。

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，科学家们用它们作为“时钟”来记录过去的时间。

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

在许多星系和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。

So things like quasars can make these bright radio sources in the sky.

所以像类星体这样的天体可以在天空中产生明亮的无线电波源。

Quasars are among the brightest sources and the most powerful objects in the universe.

类星体是宇宙中最亮的光源之一，也是宇宙中最具威力的天体。

Radio astronomy was key in establishing  the shape and rotation of the Milky Way, discovering quasars and pulsars, and detecting  organic molecular species like cyanide, ammonia, water and amino acids in  interstellar molecular gas clouds.

射电天文学在确定银河系的形状和自转、发现类星体和脉冲星，以及探测星际分子气体云中的有机分子种类（如氰化物、氨、水和氨基酸）方面起到了关键作用。

From the 500 million objects visible, the brightest 800,000 galaxies and 100,000 quasars were selected, and their sizes and positions in the sky accurately transposed as holes drilled into hundreds of aluminium disks.

从可见的5亿个天体中，筛选出了最明亮的80万座星系和10万个类星体，并将它们的大小和天空位置精确地转化为数百个铝盘钻出的孔洞。

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和类星体，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射线源。

Quasars were common  in the early universe, having peaked in number 10 billion years ago when galaxies,   and the universe itself was still very young.

类星体在早期宇宙中很常见，在大约100亿年前数量达到峰值，那时星系和宇宙本身还非常年轻。

These jets are found in active galactic nuclei known as quasars, and they're created as dust and gases rapidly fall into the feeding black hole.

这些喷流存在于被称为类星体的活跃星系核中，它们是在尘埃和气体快速落入黑洞时产生的。