Space Radiation Biology for “Living in Space”

Oxygen in space radiation biology

Ionizing radiation at low LET is more effective in the presence of oxygen than in its absence in producing most biological effects. Most experimental radiobiological irradiations are conducted in the presence of oxygen at sufficient concentration to produce a “full oxygen effect”. To understand the full oxygen effect it is helpful to review the traditional definition of OER, which is the ratio ...

"Space Radiation Effects on Technology and Human Biology

1. Space Radiation Environment and Modeling • The Earth’s geomagnetic field and its effect on high-energy, ionizing particles including electrons, protons, and some heavy ions • The Earth's trapped radiation environment and Trapped radiation models, the characteristics of the Van Allen belts and South Atlantic Anomaly • Effects of trapped radiation on spacecraft and components • Space Weather c...

Deep space missions and the issue of overcoming the problem of space radiation

As a member of the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS), Iran has a long-term space exploration program. Space radiation is one of the challenges facing humans when they go outside Earth's protective atmosphere and magnetic field. Space is an environment that the cardinal principles of radiation protection i.e. time, distance and shielding cannot be effectively ...

Radiation protection in space.

The challenge for planning radiation protection in space is to estimate the risk of events of low probability after low levels of irradiation. This work has revealed many gaps in our knowledge that require further study. Despite investigations of several irradiated populations, the atomic-bomb survivors remain the primary basis for estimating the risk of ionizing radiation. Compared with previo...

Probability of Causation for Space Radiation Carcinogenesis following International Space