It's actually infrared light, and the only difference between infrared and visible light is the wavelength.

实际上这是一种红外线，对于可见光和红外线来说唯一的区别就是波长。

Lead doesn't let infrared light through.

铅不能让红外线通过。

Observing their infrared light, we can also see the stars embedded inside them.

通过观察它们的红外光，我们还可以看到嵌在它们内部的恒星。

But infrared light heat bounces off them so what you will do?

但它们会放射出红外线辐射，所以你要怎么做？

It uses infrared light -- similar to the light produced by a television remote control.

它使用的是红外光，类似于电视机遥控器产生的光线。

That heat works its way out of Jupiter, and gets radiated away as infrared light.

热量通过红外辐射的方式离开木星。

And we can't see with our eyeballs, the actors can't see the infrared light.

我们眼球看不见，这些演员也看不见红外线。

NASA's WISE satellite is a space telescope that carefully surveyed the universe in infrared light.

NASA 的“广域红外探测器”（WISE）卫星是利用红外线仔细宇宙的太空望远镜。

They just lit the scene with infrared lights from the " witness cameras, " they're called.

他们只是用“目击者摄像机”发出的红外线来照亮现场。

So gold, it turns out, is a great reflector of infrared light.

所以，事实证明，黄金是红外线的极佳反射器。