Good post! SETI's fine with me, too, though I have my doubts that we'll ever find any life out there. But then, who knows?
One has to wonder if evolution is falsifiable. If someone tomorrow proves that the earth is 6,000 years old, the evolutionists will announce that this just means evolution happened faster than previously thought. If a mechanism is discovered limiting variation, they'll announce that the mechanism itself evolved after everything else evolved. If God Himself were to appear to us, they'd announce that He evolved.
Don't the young earth creationists who postulate a global flood some 4,200 years ago already postulate that much of evolution happened since that time?
The theory of evolution must adapt to facts, wherever they lead. The current theory will change if the facts show that there are errors. That is the unique quality of science and the scientific method.