Aircrew and passengers are exposed to cosmic ionizing radiation on every flight. Here you can learn more about cosmic ionizing radiation, how you can be exposed, exposure levels, and possible health effects.
What is cosmic ionizing radiation?
Cosmic ionizing radiation (or cosmic radiation) is a form of ionizing radiation that comes from outer space. A very small amount of this radiation reaches the earth. At flight altitudes, passengers and crewmembers are exposed to higher levels of cosmic radiation.