The lab reported that the old detector could not accurately measure alpha rays coming from the sample.

At dusk, the divers were surprised to see a school of butterfly rays gliding over the sandy seafloor.

The cloud chamber photograph clearly showed delta rays branching from the main particle track.

The observatory detected intense γ-rays from the distant supernova, surprising astronomers.

Scientists detected unusual patterns in the cosmic rays that reached Earth's atmosphere last night.

Scientists detected unexpected spikes of gamma rays coming from the distant galaxy.

In the forest clearing, rays of light pierced the morning mist and painted golden patterns on the dew.

The dentist reviewed the x-rays before deciding on treatment.

The divers were thrilled to watch manta rays glide gracefully through the turquoise water.

Scientists detected an unexpected burst of γ rays during the observation.