Not to be confused with gravitational waves.

不要和引力波混淆。

So what was needed to detect gravitational waves?

所以探测引力波需要什么？

That’s why detecting gravitational waves is so significant.

这就是为什么引力波探测对我们如此重要。

There are gravitational wave detectors spread across the world.

全球各地都有引力波探测器。

What would a gravitational wave feel like?

引力波会让人产生什么感觉呢？

And that's the gravitational waves that we're looking for.

这种情况，就是我们在寻找的引力波。

They do it by rippling this space with gravitational waves.

它们通过引力波在周围空间激起涟漪似的波纹。

China has sent two satellites for the detection of gravitational waves into planned orbit.

中国已将两颗用于探测引力波的卫星送入预定轨道。

Fluctuations in the gravity coming from the universe are called gravitational waves.

宇宙中传来的引力的波动，就是所谓的引力波。

Albert Einstein predicted gravitational waves over a hundred years ago.

爱因斯坦在一百多年前就预测到了引力波。

Chinese scientists have found key evidence for the existence of nanohertz gravitational waves.

中国科学家发现了纳赫兹引力波存在的关键证据。

We just know that there is evidence for gravitational waves background.

我们只知道存在引力波背景的证据。

Gravitational waves move out from what caused them, like ripples on a pond, getting smaller as they travel farther from their center.

引力波从碰撞点向外扩散，就像水面的涟漪，远离涟漪中心的同时，强度也会逐步衰减。

This is the first time we've seen this particular kind of gravitational wave signal.

这是我们第一次看到这种特殊的引力波信号。

So the trouble with gravitational waves is that they're very weak; they're preposterously weak.

研究引力波的难点在于它们太微弱了； 微弱得不合常理。

And so we now know there's an entire gravitational wave spectrum out there.

所以，我们现在知道存在完整的引力波频谱。

So let me take a moment to tell you what I mean by a gravitational wave.

现在让我来简单介绍一下 什么是引力波。

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。

The excess energy from the collision would be expelled back into the Universe as gravitational waves.

这次碰撞产生的多余能量会以引力波的形式返回到宇宙空间里。

It can ripple with gravitational waves. And it can expand, creating more and more space in space.

它可以因重力波影响而震动，也可以膨胀，在两个物件之间创造出更多的空间。