These results gave a new approach to the study of cosmic rays.

Which, of course, leaves cosmic rays still interesting in their own right.

Beginning in the late 1940s, rockets were used to study cosmic rays.

Although cosmic rays were discovered 75 years ago, scientists are still not sure where they come from.

After all, he had been made into an experiment to see the effects of cosmic rays on the human body and mind.

It measures cosmic rays, even though it's not looking at them any more.

It can also act as a trigger for cosmic rays.

I have read your little thesis on the cosmic rays.

One important example is carbon-14, produced from nitrogen-14 in the atmosphere by cosmic rays.

It inspired him to begin his own research on cosmic rays.