If aliens visited, would we even know?

There are countless sci-fi tales centered on contact with aliens, and an astrophysicist has an idea of how that could really happen. Avi Loeb is the Frank B. Baird, Jr., Professor of Science at Harvard University, the founding director of Harvard’s Black Hole Initiative and the director of the Institute for Theory and Computation within the Harvard-Smithsonian Center for Astrophysics. He joins host Krys Boyd to discuss identifying and having contact with an extraterrestrial and the implications it would have for humankind. His book is “Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars.”