It’s a story so familiar to many that you may not even realize there’s more to be discovered. The Bible describes an event that led so-called wise men to Jesus. Scripture calls it a star, but what was it really? That’s the question Grant Mathews, director of the center for astrophysics at Notre Dame, set out to answer. He believes the Christmas star was actually a planetary alignment. He shares his research with us for this episode of Notre Dame Stories.