Visible light just passes over them.

只会穿过。

Infrared has a longer wavelength than visible light.

红外线的波长更长。

But in visible light the planet looks almost featureless.

但在下裸眼观看，这颗行星看起来就几乎毫无特色。

The wavelengths we see through our eyes, we call visible light.

我通过眼睛看到的波长，我称之为。

That energy is emitted as photons of visible light.

能量以的子形式发射。

Its neutrinos reached Earth about three hours ahead of the visible light.

这些中微子提前三小时抵达地球。

The exoplanet Fomalhaut b was the first one photographed with visible light.

这个名为“北落师门b”的系外行星是第一个用视拍到的行星。

Just like visible light, x-rays are less likely to penetrate denser materials.

类似于，X线难以穿过密度高的物体。

There, they absorb infrared radiation and convert it to visible green light.

在那里，收红外辐射，并将其转化为的绿。

This pulse can be detected in visible light, radio waves, and even X-rays!

这种脉冲以在、无线电波、甚至X射线中被探测到！

There are clouds, but again they're difficult to see in visible light.

天王星的有云团环绕，但同样的，在下很难看到。

This is what we call “visible light, ” also known as the visible spectrum.

这就是我所说的“”，又叫谱。

At the lower end of the spectrum, there's radio, infrared, and visible light.

在谱的低频端的是无线电，红外线，和。

Together with visible light, all these types of radiation are called the electromagnetic spectrum.

同一起，所有类型的辐射都叫做电磁频谱。

And finally, we arrive back thirteen billion years ago, at the beginning of visible light.

最后，我抵达 130 亿年前抵达的起源。

We call this kind of light visible light.

我称这种为。

A typical optical telescope has a diameter a few million times the wavelength of visible light.

传统的学望远镜的直径是波长的数百万倍。

Together, all the colors make up the spectrum of visible light—the light we can see.

所有的颜色一起构成了的谱——我所能看到的。

Furthermore, it lies behind a shroud of dust that blocks any visible light from passing through.

此外在前面还有一层阻隔任何线通过的尘埃。

Radio waves pass right around “normal” telescopes, ones that we use to observe visible light.

无线电波会从我用来观测的“普通”望远镜周边穿过。