Correct. The difference between Galileo and evolutionary biology, however, is that the latter have an overwhelming amount of evidence supporting evolution, whereas in Galileo's time the evidence for heliocentrism was still inconclusive. That, of course, has changed.
Not really. But then that depends on "what is is", meaning what do you mean by evolution.
Ideas and designs evolve -- the evidence is universal and obvious for that assertion of a fact. But then, that kind of proven evolution is not what you mean, is it?