It's now called Advanced LIGO as a result.

所以现在它可以被称为“高端LIGO”。

This is where the LIGO experiment comes in.

这就是LIGO实验的出发点。

Imagine that LIGO is seeing just these chirps.

想象 LIGO 看到就是这些啁啾声。

That's what the LIGO detectors do.

这就是 LIGO 的功能。

That's the lasting importance of LIGO.

而这就是LIGO的长远价值所在。

That's why everyone thought the LIGO people were nuts.

这就是为什么 人们认为LIGO的研究者们都是疯子。

LIGO found things that we didn't expect.

LIGO就发现了 我们意想不到的事物。

People are familiar with things like LIGO.

人们都熟悉“LIGO” 这样的东西。

In a way, detectors like LIGO are big gravitational wave radios.

某种意义上说，LIGO 这类探测器，如同一台大型引力波收音机。

I'm in a building that contains a 1 to 100 scale of LIGO, the gravitational wave detector.

我现在所处的建筑，有一个百分之一尺寸的Ligo引力波探测器。

Einstein predicted gravitational waves over 100 years ago, and LIGO was the first to see them.

爱因斯坦在 100 多年前就预言了引力波，而 LIGO 是第一个看到引力波的机构。

The finding, from the Laser Interferometer Gravitational-Wave Observatory, or LIGO, showed that extreme gravity can cause ripples in spacetime.

这一在激光干涉引力波天文台（LIGO）上的重大发现, 表明极限重力可以引发时空涟漪。

LIGO had that first whopping signal, which was amazing.

LIGO 有了第一个巨大信号——这很了不起。

So LIGO sees the last fraction of a second of their binary black hole mergers.

因此，LIGO 能看到双黑洞合并的最后几分之一秒。

LIGO detects a gravitational wave signal, which scientists then study for data about the object that generated it.

科学家借助 LIGO 探测到的引力波信号，研究产生引力波的物体。

LIGO measured gravitational waves for the first time about two years ago.

大约两年前，LIGO 首次测量了引力波。

And since then LIGO  and VIRGO have detected many more collisions.

从那以后, LIGO和VIRGO探测到了更多的碰撞。

LIGO's already revealed surprises, like that black holes collide more often than we ever expected.

LIGO 已经揭示了惊喜，比如黑洞碰撞比我们预期的更频繁。

It was that wave that physicists in the United States and Europe, using detectors called LIGO and Virgo, captured last year.

去年，美国和欧洲的物理学家使用LIGO（激光干涉引力波天文台）和Virgo（" 处女座" 引力波探测器）捕获了这种波。

But scientists didn't observe them until 2015, when the advanced LIGO gravitational-wave observatory finally detected gravitational waves after 8 years of operation.

但是科学家们直到 2015 年才观测到引力波，通过利用当时先进的 LIGO 引力波天文台经过八年的观测，终于探测到了引力波。