So much for the light barrier, gone the way of the sound barrier.

And I don't want to risk any sharp shooting this close to the light barrier.

Before we were able to break the light barrier, it took approximately 50 years to reach your planet.

So dumb they haven't even figured out how to crack the light barrier.

Today, some people speak of a "light barrier," and ask whether it, too, may fall.

We had gone through the light barrier of 186,000 miles a second.

Then, mere years after they finally did launch those weapons against themselves, they'd broken the light barrier.

We don't want to break the light barrier with a door open.

Masses large enough to collapse behind a light barrier were more difficult.

Any mass passing through the light barrier would appear as if it had been created out of nothing.