Space nerds, has SpaceX talked publicly at all about the en-route obstacles to a Mars mission (radiation, deconditioning, closed-loop life support) and how it plans to address them? I can find stuff about launch and landing but not the middle part that is the actual dealbreaker.
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Make a quick trip over to the sun perhaps?
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Probably the best simulation of a Mars trip is the ISS. It has all of the vacuum and weightlessness, as well as some of the radiation and isolation issues. Add a shielded shelter for solar storms and pack more stuff in advance should cover most of the difference.
End of conversation
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