the day of this week's state of the union speech, the number one story at the washington post website had nothing to do with politics. instead, it concerned this multi--sided object spied in the milky way, hawaiian for scout, this theory about what it might represent, harvard's top astronomer says an alien ship may be among us, he doesn't share what his colleagues think. joining me is avi loeb, chair of astronomy at harvard university. isn't it amazing, the full nation focused on the state of the union and politics, this is what we were interested in, why? >> the state of the universe is much more exciting.