[ExI] Radiation damage could stop manned trips to Mars

[Stephen Van Sickle]

 It would be very hard to do for the high energy particles this paper
discusses.  But probably not impossible.

On Tue, Oct 11, 2016 at 2:46 PM, Dylan Distasio <interzone at gmail.com> wrote:

> I haven't read the paper, but isn't a self generated magnetic field
> surrounding the living  sections a possible solution for this?
>
> On Oct 11, 2016 4:46 PM, "Stephen Van Sickle" <sjv2006 at gmail.com> wrote:
>
>>
>>
>> On Tue, Oct 11, 2016 at 12:40 PM, BillK <pharos at gmail.com> wrote:
>>
>>> On 11 October 2016 at 19:57, Stephen Van Sickle wrote:
>>
>>
>>
>>>
>>> This lab is part of NASA’s Human
>>> Research Program
>>>
>>
>> So what?  NASA is as capable of bad science as anyone.
>>
>>
>>> The rate of
>>> dosage doesn't matter.
>>
>>
>> Yes, it does.  It matters quite a bit.  If you live in Denver for 80
>> years, your total background dose is abut 1 Sv.  Any effect of that won't
>> be measurable.  If you get that dose in one hour, you will show symptoms of
>> Acute Radiation Syndrome and have about a 5% chance of dying from it in a
>> month.  Rate likely will have a different effect with cosmic radiation than
>> with gamma, but a blanket statement that "rate of dosage doesn't matter" is
>> just plain wrong.
>>
>> I also said "take with a big grain of salt", not "disregard entirely".
>> Heavy ion radiation is one of the two biggest medical concerns (the other
>> being .38 g gravity effects).  It is a serious issue, but like .38 g just
>> about impossible to experiment with on earth.  Even if there is an
>> accelerator that can create cosmic ray energies (and there isn't), no one
>> would tie it up for 2 or 3 years for one experiment.  So they do the
>> experiment that they can, not the one which they need.  Very common, but
>> the results are rarely definitive.
>>
>> s
>>
>>
>>
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>>
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