Re: Is it this easy to live on Mars?

On Sep 21, 8:16 pm, BradGuth <bradg...@xxxxxxxxx> wrote:
On Sep 21, 4:35 pm, Willie.Moo...@xxxxxxxxx wrote:





On Sep 21, 4:52 pm, BradGuth <bradg...@xxxxxxxxx> wrote:

On Sep 21, 12:09 pm, Willie.Moo...@xxxxxxxxx wrote:

On Sep 21, 12:33 am, BradGuth <bradg...@xxxxxxxxx> wrote:

On Sep 20, 8:17 pm, Willie.Moo...@xxxxxxxxx wrote:

The radiation level on Earth exposes us to 1 millirad per day
The radiation level on Mars is 8 millirad per day
The radiation level in interplanetary space is 22 millirad per day

Ever notice how you're all alone on this one?

btw, there's more than one kind of radiation dosage.  Want to bet that
Mars dosage per mrad is of a worse dosage (more DNA lethal) than any
terrestrial mrad?

 ~ BG

Do you have any relevant references using actual measured data to back
up this claim?   Or is it as baseless as all other claims you
erroneously make?

Oddly, most all of our better and most recent DARPA and NASA related
instrumentation readings are either taboo or nondisclosure rated.

That's a lie.- but I understand you have absolutely no data to back up
your statements made earlier.

Raytheon/TRW space data report has the average GSO dosage as shielded
by 2 g/cm2 (roughly 5/16" aluminum) as 2e3 Sv/year, and that's letting
only the really bad and secondary/recoil stuff in.

Geosynch orbit has 2,000 Sv/yr - That's 20 rad/yr - that's 54.7
millirad/day - which is more than double the figure in free space,
since you're in the middle of the freaking VanAllen belt.

Place that same package into orbiting our gamma saturated moon

Why would placing a sensor that's in the middle of the vanAllen belt
reproduce radiation levels found in that place?    This  makes
absolutely no sense at any level.

and
within a relatively short amount of time you can kiss your *** of
frail DNA goodbye with having 20 g/cm2 worth of shielding.

You don't understand what you're talking about.  Radiation levels do
not depend on how the sensor is constructed or how they selected a
specific range of ionizing radiation - haha - fact is, radiation
levels on the surface of the moon averages 15 millirads per day.
Easily survivable for short periods of time as experienced by Apollo
crews (equivalent to a Concorde flight) but an issue for long term
habitation.   This is nearly 1/4 the levels found at GSO  - the center
of the Van Allen belts - where significant quantities of ionizing
radiation circulate around the Earth.

Levels on the moon are not constant - Lunar polar regions are somewhat
sheilded from solar radiation to the 8 millirad level - and there
appears to be water available subsurface there.  So, this may be a
place to try out some of the technology that will later be used on
Mars.

GSO at 200,000 rads per year as shielded by 5/16" aluminum.  Can you
say duh?

 ~ BG- Hide quoted text -

- Show quoted text -

I will admit that I miscalculated - dividing by 100 rather than
multiplying by 100 - so, I'm off in interpreting the figure you gave
by a factor of 10,000 - this puts the radiation level up to 547 rads
per day - which is lethal to humans.

GSO is the center of the van allen belts though I find this number
surprising, so I'd like to see it confirmed with standard models
developed by NASA and ESA. (I gave references elsewhere)

Despite my error,which is easily understood and corrected, you are
still wrong thinking that 5/16inch layer of aluminum sheilds radiation
- it actually multiplies it creating secondary radiation. I gave
pointers to explanations of how that works elsewhere as well.
..
You are also wrong in thinking that just because high levels of
radiation exist at the center of the van allen belt that they must
exist elsewhere. You really should come to understand how radiation
flows through teh space environment, then you would see that while
raidation must be taken into account in mission planning, it is not a
show stopper as you seem to suggest.
.