Cosmic rays are energetic charged subatomic particles, originating in outer space; i.e. they will be affected by magnetic field. About 89% of cosmic rays are si

Cosmic rays are energetic charged subatomic particles, originating in outer space; i.e. they will be affected by magnetic field. About 89% of cosmic rays are simple protons or hydrogen nuclei, 10% are helium nuclei or alpha particles, and 1% are the nuclei of heavier elements. The term ray is historical as cosmic rays were thought to be electromagnetic radiation. [Quoted from Wikipedia]