Science

Mars astronauts would get unsafe radiation doses even with shielding

Simulations show that a 1000-day mission to Mars would expose astronauts to radiation doses above 1 sievert, even with metal shielding



Space



12 August 2022

Unlike Earth, Mars has no global magnetic field to deflect radiation from the sun

Science History Images / Alamy

A crewed mission to Mars would expose astronauts to radiation levels higher than the safe limits set by space agencies, even with metal shielding, simulations have revealed.

There have been real-world and simulated studies of radiation doses in space, but these tend to be either time-limited or restricted in scope, such as only accounting for specific organs or focusing on men only.

“Many calculations took a very simplistic approach, but we have done it in a …

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