July 17th, 2003, 01:32 AM
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Lieutenant General
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Join Date: Jan 2001
Location: Oxford, UK
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Re: OT: Carbon Dioxide races -> known vs unknown -> terraforming mars -> is or is not
[quote]Originally posted by geoschmo:
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Originally posted by dogscoff:
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By the time you eliminate the ones that can only exist in a proton accelerator/ the centre of a star/ supernova/ black hole etc, you find that there are only about 100 or so elements actually available to Mother Nature for making life. We know the properties of all of those elements, and so we can make some pretty good assumptions about what aliens will be made of.
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Well dang. That makes a lot of sense teh way you put it there, but it's kind of depressing. It makes it seem like we are closer to the end of knowing pretty much everything then to the begining. 
Not really. For example the known matter makes only 10% or even less of Universe. The rest is "dark matter". Or how about cosmological constant ? It is not proven yet but it appears to be not zero. But what is its nature ?
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