In the vast emptiness of space, two forms of radiation menace astronauts: Cosmic rays zip through the galaxy at near-light speeds, while solar activity produces a more subdued form of radiation. Both are a problem for space travelers, causing conditions ranging from impaired vision to cancer.

This radiation isn’t a problem here on Earth thanks to the planet’s protective atmosphere, which blocks the worst of it. But engineers still don’t have effective methods to shield astronauts from these dangers, and that adds an extra level of risk to already risky plans to send humans to Mars on a three-year journey by the 2030s.


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Created on Jun 12, 2020
By @gurlic