https://blogs.mercola.com:443/sites/vitalvotes/archive/2004/02/20/What-are-the-Risks-of-Radiation-for-Humans-in-Space-.aspxThe recent Mars photos make it seem like humans are closer than ever to landing on Mars. One of the biggest unknowns in space travel is exactly what effect radiation from the Sun and cosmic rays will have on the human body for the 1,000 days a journeyenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)