cosmic ray

Cosmic ray observations are more challenging than many other forms of astronomy.

Due to their varying origins, they carry a variety of energies, which is called the cosmic ray spectrum.

At the end of the second day after their trouble with the cosmic ray field, they stopped for observation.

The X-ray is high on the scale and even the cosmic ray is far above its lower limit of detection.

And he pointed to the cosmic-ray skiagraph of the Moon on the curved glass dome overhead.

It was relux, and he knew it, but he knew what would happen when that cosmic ray hit it.

Arcot shot out a cosmic ray himself, and swept the Thessian with it thoroughly.