The Perils of Going to Mars Include Radiation
Better spaceship protection will be needed to keep astronauts safe.
Readings from the Radiation Assessment Detector (RAD) aboard the spaceship that carried the Curiosity rover to Mars reveal that astronauts would receive significant doses of very-high-energy galactic cosmic rays and solar particles.
While the readings are not unexpected given what is known about deep space, the actual measurements are sobering: An astronaut in a spaceship protected to the same level as the International Space Station (ISS) would receive enough radiation to approach or exceed what is considered to be a safe lifetime exposure.
"I would not call this a surprising result per se, but it does show with real data for the first time that people going to Mars will get a substantial dose of radiation from the