&quot;Jupiter showers its moon Europa with enough radiation to kill a human in just a few days.&quot;<p>Of course you&#x27;ll freeze in a matter of minutes. Or suffocate in a matter of seconds. Also, there&#x27;s like nothing to eat.<p>Point is, probably the only place where you could built a viable habitation unit is below the ice anyway, where radiation is a bit less of a concern. And in any case, in space you have to protect against so many things that radiation may not add a lot of marginal complexity.