Re: Evolution and other planets
From: Matt (matthew-cantrell_at_uiowa.edu)
Date: 12/27/04
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Date: Mon, 27 Dec 2004 04:13:12 +0000 (UTC)
While I do believe there is life on other world's (Not X-Files Style)
the chances of it being similar to here is slim to none. Species here
evolved the way they did due to their environments. For example
dinosaurs might still be roaming around if an asteroid had not crashed
into earth a few million years ago. Most people think that liquid
water is the key to life, however the the thermal vents in the bottom
of the ocean have shown that life can thrive in even the most
unhospitable of conditions (ie living of hydrogen sulfide gases).
Species on this planet come and go everyday, many before they are even
discovered (paradoxical yet true)While evolution is thought to be a
very slow process which Darwin yanked from the geology work of Charles
Lyell's concept of uniformitarianism, evolution can ocur quite quickly
as in the case of punctuated equilibra where a dramatic, sudden change
in the envirnoment creates an excess of resources where species that
have the best natural selection capabilites can flourish. (food,
nesting space less competition)If you are interested in this take a
look at the work of Stanley Miller's groundbreaking work in the 1950's.
Basicly he showed in a very simple experiment how the building blocks
of life were formed from the environment that was available when the
earth was at it's earlier stages. Cool Stuff.
Perkowski wrote:
> Quick question...
>
> 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?
>
> For example, could a planet somewhere in our galaxy be the home
> of past creatures like the dinosaurs that appeared here on Earth?
>
> All things being equal, would animals/plants on other world follow
> the same evolutionary map that animals/plants on Earth do?
>
> Joe Perkowski
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