But, the internet travels at the speed of light.

但是，互联网是以光速传播的。

That's why it's called the speed of light.

这就是为什么它被称为光速。

And going faster than the speed of light is impossible.

速度超过光速是不可能的。

Approaching the speed of light doesn't slow down time. Approaching them does.

在接近光速的情况下时间不会减慢, 和他们在一起时才会变慢。

At incredible speeds too, up to 90 % the speed of light.

也是以大约光速90%的极快速度在旋转。

After all, nothing travels faster than the speed of light, right?

毕竟，没有力量可以超越光速，不是吗？

The expelled energy moves at 99.99 percent the speed of light.

排出的能量以99.99%光速运动。

But in computers, signals can travel at the speed of light.

但在电脑里，信号是以光速传播的。

But self-driving cars can talk to each other at the speed of light.

但是自动驾驶汽车们可以用光速来交谈。

It fires protons close to the speed of light in opposite directions.

它向相反方向发射接近光速的质子。

So, how fast is the speed of light?

那么，光速有多快？

The problem is information flies around the world at the speed of light.

问题是，信息以光一样的速度在全世界迅速传播。

Enabling you to travel the universe even faster than the speed of light.

可以使你穿越宇宙的速度比光速还快。

(the speed of light in glass is about two-thirds of that in air).

（玻璃中的光速大约是空气中的三分之二）。

Even that close, they'd be going half the speed of light.

它速度应该有光速的一半。

He added, " This is a disease.This spreads at the speed of light, literally" .

" 这简直是一种以光速传播的疾病。"

If you could move at the speed of light, your time would stand still.

如果你能以光速移动，你的时间就会停止。

You may have heard that nothing can travel faster than the speed of light.

你可能听说过没有什么能比光速更快。

They travel at the speed of light: 186,000 miles per second.

每秒186000英里。

In 1983, scientists decided that a meter would be defined by the speed of light.

1983年，科学家决定用光速来定义米。光速是常数。