Definitions for "COSMIC RADIATION"
Ionizing radiation that originates from our sun and other stars in the universe. Cosmic rays are penetrating bundles of energy like gamma rays, but most are filtered out by the earth's atmosphere. The higher in altitude we go (e.g. mountains, jets), the more we can be exposed to them. Cosmic rays are part of background radiation.
High-energy type wave or particle radiation coming from deep space. Cosmic rays are the most penetrating and dangerous radiation types.
Radiation from space that reaches the earth from all directions