Quote:Edit: You're also assuming that all life has to meet the exact requirements of life as we know it.Hmm yes and no. I think a planet could be somewhat more 'harsh' but I think there's only so much any 'being' could take. For example, if the temperature all around Mars is really between -143 to 27C then I find it hard to imagine a species being able to survive such different extremes.
"It is the mark of an educated mind to be able to entertain a thought without accepting it" ~ Aristotle
