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Astronaut Edwin E 'Buzz' Aldrin Jr. walks on the surface of the moon. Future lunar travelers face a radiation dose 30 percent to 40 percent higher than originally expected from radioactive lunar soil. | NASA/Neil Armstrong
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Moon Poses Radiation Risk to Future Travelers

The Moon poses a radiation risk to future travelers there. Understand why the Moon poses a radiation risk to future lunar travelers.

December 17, 2009
3:00 AM EST

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