If we don't determine where the radiation is coming from soon, it will build up again- with us inside.

But if there were no mines, where was the radiation coming from?

The radiation coming out of the black hole would be random.

The emotional radiation coming from the people on the other ship was even worse.

Such radiations could come from any number of possible sources.

Yet those radiations are coming from them that I picked up before.

The radiation came, and they veered out into the ocean.

No one knew where the radiation came from or who would be the next to sicken and fall at their post.

"In fact, the main purpose of the runabouts will be to try to figure out where the radiation is coming from."

Even more such radiation comes continuously from deep space.