"The real threat would come from the discovery of extraterrestrial intelligence, because if there are beings elsewhere in the universe, then Christians, they're in this horrible bind. They believe that God became incarnate in the form of Jesus Christ in order to save humankind, not dolphins or chimpanzees or little green men on other planets."
This guy obviously hasn't spent much time hanging around religious people. If we found proof of extraterrestrial intelligence it would take the average Jesuit less than a couple of hours to integrate it fully into Catholic dogma and provide copious biblical references that (when interpreted correctly) show that Moses prophesied it thousands of years ago and that the parable of the Good Samaritan actually refers to two-headed beings from Betelgeuse.
All successful religions owe their success to being flexible.