Re: Evolution and other planets
From: deowll (deowll_at_bellsouth.net)
Date: 12/29/04
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Date: Wed, 29 Dec 2004 06:08:59 +0000 (UTC)
"Anthony Cerrato" <tcerrato@optonline.net> wrote in message
news:cqitce$ag1$1@darwin.ediacara.org...
>
> "Perkowski" <perkowski1@optonline.net> wrote in message
> news:cqi6rl$475$1@darwin.ediacara.org...
>> 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
>
> IMO, it's very unlikely they would follow the same
> evolutionary map that animals on Earth do, and only a bit
> less likely plants would too. Firstly, the exact
> environments of such planets, even if relatively friendly to
> our kind of life, is sure to differ in many respects,
> ranging from small to very large ones. This will certainly
> factor into structure and function of living things. Even if
> the planet were a duplicate of Earth in its early days,
> there are just too many possible options available for
> evolutionary paths for them to be exactly _identical_ to the
> historic ones here. Life will undoubtedly take a whole new
> path unique to each planet and its own geological history.
> ...tonyC
>
>
Of course but he didn't suggest it be identical in any way. Only that one
kind of life once found on Earth might have an analogue. Unless you are
claiming that the kinds of metazoans found on Earth are unlikely to have
ever arisen on a life bearing planet similar to Earth then finding similar
but unique organisms isn't unlikely in the vastness of space.
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