Moonwalking Humans Get Blasted With 200 Times the Radiation Experienced on Earth | Smart News

The 12 human beings who have walked on the moon were all bombarded by radiation roughly 200 times what we experience here on Earth, reports Adam Mann for Science. That’s two to three times what astronauts experience aboard the International Space Station, explains Marcia Dunn for the Associated Press (AP), suggesting that any long term human presence on the moon will require shelters with thick walls capable of blocking the radiation.

Despite the fact that the measurements, which come courtesy of China’s Chang’e-4 lunar lander, are quite high compared to what we experience on Earth, the data is quite useful for protecting future moonwalkers. According to Science, the levels of radiation at the lunar surface wouldn’t be expected to increase the risk of NASA astronauts developing cancer by more than 3 percent—a risk threshold the agency is legally required to keep its astronauts’ activities safely below.

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