Radiation health and protection

Abstract

Astronauts in low Earth orbit and outside the confines of the protection of the Van Allen belts are continuously exposed to a variety of energetic particles referred to as space radiation. Space radiation consists of high energy particles originating from galactic cosmic and solar event sources. These charged particles can damage living tissue and impact health in both the short and long term. Astronauts and other space travelers must be protected from radiation to the greatest extent possible, by physical space craft shielding, and through managing mission timing and crew selection policies. This chapter addresses different types of space radiation, their respective mitigation strategies, and associated potential health risks and clinical consequences. Current and future technological and administrative risk mitigation strategies and practices are discussed.