I don't buy evolution. It's like saying a hammer evolved from a piece of iron.
I'm with you, Veri, regarding true Darwinian evolution. If it did happen, it was manipulated by an intelligent mechanism, especially the emergence of DNA and the various points in the evolutionary record where there seems to have been an infusion of new info into the code, like in the Cambrian explosion.
Still, though, I don't think the two questions in the OP are related: I.e the existence of life elsewhere and Darwinian evolution. They simply transfer the same debate/problem/question to another planet.