But that signal is too weak. We can't see it against the universe's background radiation.

但是信号太弱了。在宇宙辐射背景下，我们根本看不到它发出的辐射。

We can still see these ripples in the background radiation of the universe, a permanent reminder of this epic brawl.

我们仍然可以在宇宙的背景辐射中看到这些涟漪，它们是这场史诗般的斗争的永久痕迹。

This light is known as the cosmic microwave background radiation.

这种光被称为宇宙微波背景辐射。

Radiation is harmful to living things, yet the long-term effects of persistently high levels of background radiation on ecosystems are poorly understood.

核辐射对生物有害，而长时间高水平的本底辐射对生态系统有何影响，人们还知之甚少。

All this background radiation comes from radon in the air and uranium and thorium in the soil.

所有这些背景辐射都来自空气中的氡和土壤中的铀和钍。

Finally, we introduced the Big Bang, cosmic background radiation, and the mysteries of dark energy and dark matter. Bye!

最后，我们介绍了大爆炸、宇宙 背景辐射以及 暗能量和暗物质的奥秘。 再见！

When you look at the background radiation from opposite sides of the sky, you're seeing it coming from opposite ends of the universe!

当你从天空的两端看背景辐射时，你看到的是来自宇宙的两端辐射！

You’ll even pick up some of the radiation left over from the Big Bang, called the cosmic microwave background radiation.

你甚至会接收到一些大爆炸遗留下来的辐射，称为宇宙微波背景辐射。

As you know, my field is evolution of the hot universe, the properties of the microwave background radiation, and theory of the black holes.

我的研究领域是热宇宙的演化，宇宙微波背景辐射的性质还有黑洞理论。

In particular, why is the temperature of the microwave background radiation so nearly the same when we look in different directions?

特别是，当我们从不同的方向观察时，为什么微波背景辐射的温度如此接近？