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**attackDoold** · 01-26-2007, 09:49 AM

but why does it have to be a liquid we have ever come across before? why is it a liquid which apparently contains the same elements as the water on earth?

The simplest answer, If you remember the two rovers sent to mars; Opportunity and its twin Spirit then you will remember that where opportunity actually landed basically inspired alot of articles, i went looking for one in particular and found a similar one on a quick google search, entitled:

Water Once Filled Mars Opportunity Rover Landing site - Very long article by the way

To sum it up. whatever at some point in mars's history there is evidence that there was a presence of water (H2O).

Why is it that every article I read that is concerned with the whole "Life on Mars" saga, there is always this unending assumption that "life" means exactly what it does on earth?

No one ever said that the only other life that could possibly exist is much like our own. there is life on our own planet that exists in environments that we consider life couldnt exist.

There is a persistent theme to all the forms of life that we currently know of. Astrobiologists believe that the three most important ingredients on which life depends are water, energy and organic molecules (carbon being a good example)

Finding a needle in a very large haystack is a daunting task. but at least you can identify and know what your looking for in the case of a needle. The only life that we know to exist is pretty much all we can comprehend. Whatever other factors that may lead to different forms of life are, we can not currenlty even begin to comprehend, let alone set on a mission to find it. Whatever other life you can imagine would be irrelevent in this case as in order to find something you have to know what your looking for, and have a means to find it / test for it.

How could we make provisions for something that we dont even know exists. Right now the search is for life that requires what we have considered necessary for life to exist.

If evidence to the contrary is ever found then our pre-requisites will change accordingly.

Also i cant seem to find another article i was looking for pertaining to evidence from martian meteors but i did come across this:

The organic molecules found on meteorites, including those from Mars, contain amino acids similar to those in living things on earth.
This suggests that the building blocks for life, if not the seeds of life itself,
are everywhere, and that these materials or seeds are raining down on planets
like ours. I am sure you will also find the rest of the read very interesting; link:

http://www.ozh2o.com/h2origin8.html

01-26-2007, 09:49 AM	#20
attackDoold Join Date Nov 2005 Posts 548 Senior Member	but why does it have to be a liquid we have ever come across before? why is it a liquid which apparently contains the same elements as the water on earth? The simplest answer, If you remember the two rovers sent to mars; Opportunity and its twin Spirit then you will remember that where opportunity actually landed basically inspired alot of articles, i went looking for one in particular and found a similar one on a quick google search, entitled: Water Once Filled Mars Opportunity Rover Landing site - Very long article by the way To sum it up. whatever at some point in mars's history there is evidence that there was a presence of water (H2O). Why is it that every article I read that is concerned with the whole "Life on Mars" saga, there is always this unending assumption that "life" means exactly what it does on earth? No one ever said that the only other life that could possibly exist is much like our own. there is life on our own planet that exists in environments that we consider life couldnt exist. There is a persistent theme to all the forms of life that we currently know of. Astrobiologists believe that the three most important ingredients on which life depends are water, energy and organic molecules (carbon being a good example) Finding a needle in a very large haystack is a daunting task. but at least you can identify and know what your looking for in the case of a needle. The only life that we know to exist is pretty much all we can comprehend. Whatever other factors that may lead to different forms of life are, we can not currenlty even begin to comprehend, let alone set on a mission to find it. Whatever other life you can imagine would be irrelevent in this case as in order to find something you have to know what your looking for, and have a means to find it / test for it. How could we make provisions for something that we dont even know exists. Right now the search is for life that requires what we have considered necessary for life to exist. If evidence to the contrary is ever found then our pre-requisites will change accordingly. Also i cant seem to find another article i was looking for pertaining to evidence from martian meteors but i did come across this: The organic molecules found on meteorites, including those from Mars, contain amino acids similar to those in living things on earth. This suggests that the building blocks for life, if not the seeds of life itself, are everywhere, and that these materials or seeds are raining down on planets like ours. I am sure you will also find the rest of the read very interesting; link: http://www.ozh2o.com/h2origin8.html
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