Patrick Chan recently pointed me to this article, which gives us another example of the insufficiency of scripture. We need an infallible guide to give us answers about this sort of thing. Maybe the Catholic Church hasn't ruled infallibly on the subject yet, but it's good to know that it could give us the answer someday if it ever wanted to.
I also appreciated the astronomer's faithfulness to Christian tradition. If Polycarp or Augustine were alive today, I'm sure he'd also be an evolutionist who publicly dismisses and derides Christians like those in the intelligent design movement. He'd refer to them as "creationist fundamentalists" who have "pseudoscientific" views and have "hijacked" the issue. I'm sure that the bishop of Rome's scientists in that day (like the one who overlooks his "meteorite collection" today) had the same sort of mindset.