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Water, Water Everywhere...

Posted by: sanman - Mon Sep 28, 2009 5:04 am
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Water, Water Everywhere... 
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Space Walker
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Post Water, Water Everywhere...   Posted on: Mon Sep 28, 2009 5:04 am
Water, water everywhere...!

When it rains, it surely pours!
All this news about water on the Moon, on even more newfound water on Mars, is just mind-boggling!

http://www.sfgate.com/cgi-bin/article.c ... 19SMRH.DTL

So many watery places! How to decide which to focus on first?!
What an amazing dilemma! Who'd have ever thought we'd get a dilemma like this!

Should it be 80-20 split? 80% effort for the Moon, and 20% for Mars?
Or should we all just forget about Mars for the time being, and totally go for the Moon?
After all, it does have the Helium-3!

Is it possible that much more water in bulk-ice form is waiting for us underground on the Moon?


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Space Walker
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Post Re: Water, Water Everywhere...   Posted on: Mon Sep 28, 2009 5:28 am
More on this:

http://features.csmonitor.com/innovatio ... s-craters/

Quote:
Until now, researchers expected subsurface ice to form as water vapor entered the ground. When it reached cold enough depths, it would form ice between the dust grains – leading to roughly a 50-50 mix of ice and dust.

One clue that this was not the case came as the team reviewed pictures of the craters over time and saw that the ice disappeared more slowly than they expected. If the ice is half dust, the ice would disappear from view quickly as more dust became exposed. But the ice lingered in the team’s images for some 200 days as it gradually changed directly from solid to gas.

The purity of the ice – estimated at 99 percent water, 1 percent dust –reopens the question of how these deposits formed.



Now that makes Mars more attractive than ever! With so much water, it's surely shaping up to be a place that humanity could colonize in the far future.


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Post Re: Water, Water Everywhere...   Posted on: Mon Sep 28, 2009 5:32 am
Still more from that last article:

Quote:
“Now we see multiple instances of very pure ice” over wide swaths of the Martian surface. “It looks like pure ice is the norm and dirty ice is the anomaly.”

Finding such large amounts of pure ice father south than models indicated point to a damper atmosphere some 10,000 years ago, when changes to Mar’s orbit triggered a large-scale retreat of ice toward the poles, the researchers say.

The team estimates that the atmosphere back then held up to twice as much moisture as it does today.


Just 10,000 years ago? Dammit, so out of billions of years of history, we missed major Martian water by a lousy 10,000 years?

Arrrghh! :x


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