Text 1297, 50 rader
Skriven 2005-01-03 06:32:00 av Deowll (1:278/230)
Ärende: Re: Evolution and other p
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"TomHendricks474" <tomhendricks474@cs.com> wrote in message 
news:cr2nll$25bn$1@darwin.ediacara.org...
>>> If life can possibly exist on other planets that are
>>similiar to Earth,
>>> what are the chances of animal and plant life on those
>>planets following
>>> the animal and planet life here on Earth?
>
>
> I think you'll find that your first premise is wrong.
> IF life can... exist on... planets similar to earth,
>
> I doubt that it can exist on any planet not similar
> to earth.
> There are a hundred reasons but two should suggest
> why.
>
> 1. A larger or smaller planet would have different
> atmospheres, due to the amount of gravity;
> that would not lead to life. Larger
> and it holds in wrong gases like Jupiter, smaller
> and no atmosphere like the Moon.
>
> 2. For life to fit it must be a planet in the liquid water
> range - that means it has to be about the same
> distance from its sun. (A larger sun and it'll burn
> out much quicker, a smaller sun and it might not
> be powerful enough to power life.)
>
Life  has to have liqued water and an energy source but an awful lot of 
microbes seem to get along fine with chemical energy. If life doesn't exist 
on at least one of the moons of Jupitor that seems to have a sea beneath a 
crust of ice some of the microbes now living  on Earth now could almost 
certainly survive once placed in that sea.


> and on and on it goes.
> See past posts or the Musea bio  article
> http://musea.digitalchainsaw.com/122Musea1.html
>
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