This may be done with: External-beam radiation, in which a machine aims high-energy rays at the cancer.

Say a really high-energy cosmic ray hits the Mir target.

Understanding how different food reacts to being zapped by high-energy rays in a microwave has also made a difference.

Ultraviolet radiation is the high-energy rays coming from the sun.

Radiation therapy to destroy cancer cells using high-dose X-rays or other high-energy rays.

Radiation therapy uses high-energy rays to kill cancer cells.

This helps astrophysicists decide where to look in space for the source of high-energy cosmic rays.

Such a "local" source could also explain the existence of especially high-energy cosmic rays that bombard near space.

Radiation therapy (also called radiotherapy) is the use of high-energy rays to damage cancer cells and stop them from growing.

But detecting high-energy cosmic rays, which are not affected by light or soot, is a different matter.