Margaret Fosmoe | Dec. 8, 2013 | South Bend Tribune
If a very bright star lit up the sky 2,000 years ago when Jesus Christ was born in Bethlehem, what caused it?
A physicist doesn't just wonder about such a question. He studies it.
A particularly bright star in the sky over Bethlehem 2,000 years ago might have been a comet, a nova, a supernova or an alignment of the planets, Grant Mathews, an astrophysics professor and researcher at the University of Notre Dame, told an audience Saturday afternoon in the digital visualization theater in Jordan Hall of Science.