Mars

Astronauts Can Survive Martian Radiation

No more radiation than found in low-Earth orbit, where humans have been stuck in their exploration of space for decades

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Radiation levels at the Martian surface appear to be roughly similar to those experienced by astronauts in low-Earth orbit, NASA's Mars rover Curiosity has found.

The rover's initial radiation measurements — the first ever taken on the surface of another planet — may buoy the hopes of human explorers who may one day put boots on Mars, for they add more support to the notion that astronauts can indeed function on the Red Planet for limited stretches of time.