The answer? It likely can't.
In a report released today, the National Academies said that there are essentially three ways NASA can go about doing this, besides completely abandoning deep space forever: It can completely liberalize its health standards, it can establish more permissive “long duration and exploration health standards,” or it can create a process by which certain missions are exempt from its safety standards. The team, led by Johns Hopkins University professor Jeffrey Kahn, concluded that only the third option is remotely acceptable."
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