This major health risk is stopping us travelling to Mars

Oct 3, 2017

The SpaceX Falcon 9 rocket, with the Dragon spacecraft onboard, carrying almost 6,000 pounds of science research, crew supplies and hardware to the International Space Station, launches from pad 39A at NASAs Kennedy Space Center in Cape Canaveral, Florida, U.S., June 3, 2017. Photo taken June 3, 2017. NASA/Bill Ingalls/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY. MANDATORY CREDIT - RC184DAB9B00

Radiation exposure is making going to Mars more dangerous than expected. Image: REUTERS

Dave Mosher

Science and Technology Correspondent, Business Insider

Gene Kim

Video Animation Intern, Tech Insider

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