An interesting book that explores the implications on religion of finding sentient alien life, in particular, on the Catholic faith.
What if an alien species were discovered that lives in perfect peace and harmony? They are entirely rational and never let their emotions get the better of them. They don't understand the concepts of crime, hate, art or religion. Should we exploit their world for resources, try to learn something from them or shun them entirely as satanic spawn created to entrap humanity?