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[Space]Mars Lander Scrapes Icy Soil in Wonderland - Page 3

post #21 of 37
http://www.nasa.gov/mission_pages/ph...ain/index.html

Quote:
Originally Posted by neonlazer View Post
i like how scientists think it MUST be ice...
It is ice. They have more evidence of this than I do that the water I put in my ice cube trays last night, which is now a solid, is ice.

Quote:
Originally Posted by CL3P20 View Post
No mention of the 5mile high tornadoes, charged with millions of volts of electricity, that burn the surface of the planet? Or the dust storms that can cover the entire planet in up to 4' or more of dust?

Mars doesnt have water for polar ice caps... they are made from dry ice. Which is ice, as we all know.. just not made from water.

Mars is not an inhabitable planet... Wikipedia is so full of info.
Mars' polar ice caps do contain water ice, in addition to dry ice, and there is likely a very significant quantity of ice, and possibly liquid water, below the surface.

As for Mars not being able to support life, BS. There are life forms on earth, that if taken to Mars, could likely survive just fine.

The soil has the nutrients, liquid water seems evident in certain areas, the atmosphere (though thin) does have gases that could be used, energy sources are present.

None of the weather phenomena that you have mentioned are any more deadly to life than similar phenomena on earth. We have thunder storms and multi-million volt lightning, dust storms that can move dunes the size of mountains, and much worse. None of these are substantially harmful to smaller forms of life, and many of them are good for an area's ecology.

http://www.dailytech.com/Tests+Indic...ticle12220.htm

http://news.nationalgeographic.com/n...ars-water.html

Quote:
Originally Posted by Guruboy View Post
Water does so much that it is inconceivable that any other substance(s) could replace it. Water is a fact of the universe; it is a single Oxygen atom bonded to two Hydrogen atoms. That doesn't just change in leaving Earth. The same materials are available on other planets as are available to us.
There are several possible canidate materials that life could utilize, besides water. Ammonia is rather promising, for example.

That said, given that Mars had, and has, a lot of water, it stands to reason that water based life is more likely than any other possibility.
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post #22 of 37
Quote:
Originally Posted by VulcanDragon View Post
Well yes, that's exactly it. We know of no life, by any agreed upon definition of the term, that is not entirely dependent on water. Doesn't mean it doesn't exist...maybe there's silicon based life out there for which water holds no life-sustaining value. But it is just more logical to search for the things you know exist than the things that could, maybe, in some sci-fi scenario exist.

I can understand on that. though you brought up another question. why is it that if there is an alternate non carbon based life form that it is always based upon silicon rather then something else? whats so special about silicon to make that the next viable choice for life? It's not just you that I have heard that from so please don't take it as me going after you but many many places seem to point to silicon for the alternative.

sorry not trying to be a pain it's just I don't know so I ask
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post #23 of 37
The fact that nasa is releasing this information is big. Go space.
post #24 of 37
Quote:
Originally Posted by rx7speed View Post
I can understand on that. though you brought up another question. why is it that if there is an alternate non carbon based life form that it is always based upon silicon rather then something else? whats so special about silicon to make that the next viable choice for life? It's not just you that I have heard that from so please don't take it as me going after you but many many places seem to point to silicon for the alternative.

sorry not trying to be a pain it's just I don't know so I ask
The reason why carbon is so special is that, in layman's terms, it can bond to four things simultaneously easily. A lot of other elements easily bond to one or two or three things, and we can force them to bond to more, but forcing them takes a lot of effort. Carbon is almost special in being able to easily bond four ways. Almost special because silicon and a handful of other elements do this as well. Why silicon is singled out of this set of elements is that its the closest to carbon in its other properties as well.
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post #25 of 37
Even if mars was inhabitable..i would be stuck in a space ship for 130 days to get there(with current tech lol) Either we make a bigger shuttle..or we invent a hyperdrive
post #26 of 37
My uncle Murry drinks Nuclear Waste, not water!


What I'm trying to say to the scientists is; "Shut your mouth, you don't know that all life needs water."
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post #27 of 37
they should send some animals there on their next trip and release them and just track with GPS to see if they survive.
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post #28 of 37
Quote:
Originally Posted by rx7speed View Post
why is it that if there is an alternate non carbon based life form that it is always based upon silicon rather then something else? whats so special about silicon to make that the next viable choice for life? It's not just you that I have heard that from so please don't take it as me going after you but many many places seem to point to silicon for the alternative.
It's already been answered, but it's because the atomic properties of silicon are very similar to carbon's. One is right below the other on the period table of elements, which is organized the way it is for just that reason.
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post #29 of 37
Quote:
Originally Posted by The Bartender Paradox View Post
At the risk of sounding snotty, I'd say that its because we can barely see the planets themselves, let alone making out any sort of detail on them.

But for the most part your argument is correct. H20 has such unique chemical properties that it is very hard to see how the complex chemical reactions that life is sustained upon could be carried out with out it. This doesn't mean that life without water is impossible, just very, very improbable.
We cant see the planets. We can only see the effect they have on there parent star. As they orbit the star, the planets gravity causes the star to 'wobble' meaning that we know the planet(s) are there.

And the martian soil can sustain life.

http://news.bbc.co.uk/1/hi/sci/tech/7477310.stm

Quote:
Originally Posted by spice003 View Post
they should send some animals there on their next trip and release them and just track with GPS to see if they survive.
They wouldnt get very far lol Between the lack of oxygen (% wise) and the temperature I'd say a few dozen feet at very most
Edited by SpuddGunn - 6/30/08 at 8:55am
    
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post #30 of 37
I eagerly await the results of the ice analysis.
Quote:
Originally Posted by dieanotherday View Post
Also let's hope that Nasa wont screw up like the last time because they used the imperial system when the Europeans used metric.
Sure, it's all NASA's fault for that.
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