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No not trying to comment on similarities only that it is beieved there is a "just right zone" for life. One can only speculate from that point but I think it goes this way. We will find a certain number of planets that look better than others by virtue of being in the zone and that maybe those could the be targetted to see if any tell tale signs of life are reflected in their atmospheres (as their being in the right zone suggests that there well could be atmosphere).
I cant offer authority on any of that it is a view formed by what has come my way when reading about the searches that may take place in the future. If the spectrum of a planet could ever be taken it may show the presence of methane, carbon di oxide, oxygen (and that stuff they preserve dead annimals with which I cant recall) and other signs that would point to the possibility of life. I imagine why the approach the subject of this post will take us a step closer to determining their presence and suitable candidates for further investigation.
It is rather mind bending to contemplate we are this close. I came from a time where it was believed we were to only planet..in fact that there was only one gallaxy ..ours..and that the other faint smudges were "island universes". How they could not contemplate the possibiliy of planets is strange but thank goodness someone did and got funding to find them.
alex
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