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Oh in water, life should be easier to born than on land ( less cosmic rays,
more even temperature, no need of rain, no gravity to overcome, ect...) ,
so life could exist in seas hundreds millions years before on dry land.
Marc
401d7942$1@news.povray.org...
> "Marc Jacquier" <jac### [at] wanadoo fr> wrote in message
> news:401cc9d3$1@news.povray.org...
> >
> > 401c9259$1@news.povray.org...
> > > Of course, one thing a planet with water needs is plantlife
> >
> > It should have no chance to do so in the time liquid water was at the
> > surface of mars.
>
> Always debateable but, yes, I think you have a good point there. I used
the
> word plantlife in a very broad sense, including things like algae and even
> protist slimey stuff someplace. :-)
>
> This brings up something about the coloration of the water used here in
> Wolfgang's rendering. My first thought was of water-borne life because of
> the greenish tinge. A large manmade lake nearby here has a sometimes vivid
> green coloring in certain places, brownish in others, yet overall tends to
> be green hues. I don't know of any water having green colorations without
> plantlife within it so its natural to think of it as life-bearing.
>
> That might be something to change then to reflect a more sterile water on
an
> early Mars.
>
> Bob H.
>
>
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