Radiation is energy that moves from one place to another in a form that can be described as waves or particles. We are exposed to radiation in our everyday life. Some of the most familiar sources of ...

We asked experts if regular exposure to low levels of radiation could be harmful to health. Credit...Joyce Lee for The New York Times Supported by By Melinda Wenner Moyer Q: It seems as if every time ...

The Martian radiation environment is characterised by a complex interplay between primary cosmic radiation and secondary particles generated through interactions with the thin Martian atmosphere and ...