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> You have literally no idea what the radiation exposure allowances will be for a manned mission to mars when it happens

These are well known and documented, to the degree we know things about human deep spaceflight.

> what advancements we’ll make to radiation shielding should we ever actually send a manned mission to mars

These are unknown. But they will, barring new technology, require mass. Which means more shielding comes at a cost. Which incentivises low-rad experienced astronauts.




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