New research shows humans can only stay on Mars for ....

New research shows humans can only stay on Mars for 4 years. Longer than that, and cosmic rays will poison you to death. 

As humanity inches closer to setting foot on Mars, a new study offers a sobering dose of reality: humans can safely live on the Red Planet for no more than four years. 

The research, conducted by scientists from UCLA, MIT, and international partners, highlights the intense cosmic radiation from the Sun and distant galaxies as the primary limiting factor. 

Unlike Earth, Mars lacks a protective magnetosphere, meaning long-term exposure could be dangerous, even fatal. The findings serve as a crucial roadmap for space agencies and companies like SpaceX planning future crewed missions to Mars.

The study, published in Space Weather, also offers guidance on when such missions should launch. Scientists recommend timing trips during the Sun’s solar maximum — the peak of solar activity — when increased solar radiation actually deflects more harmful cosmic rays from beyond the solar system. With current spacecraft technology, round trips to Mars could take less than two years, keeping astronauts well within safe exposure limits. As mission plans take shape, radiation shielding and launch timing will be critical in ensuring the safety of humanity’s first interplanetary explorers.

dive deeper https://newsroom.ucla.edu/releases/safe-for-humans-fly-to-mars

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