Space can be a potentially hazardous environment to live and work in, especially when it comes to radiation. Originating from violent storms on the Sun and galactic cosmic rays produced in distant supernovae explosions, this natural radiation can pose a serious health risk for astronauts on long-duration space missions like those on the International Space Station (ISS). To prepare for future missions that may last for months or years, the Canadian Space Agency (CSA), along with other space agencies around the world, have been stepping up research into radiation biology in recent years, recognizing that it deserves the highest priority.