In the College of Science 2025 Lecture Series on “Communication”, my colleague Professor Chris Impey and I spoke about the science behind potentially communicating with extraterrestrial civilizations. This is a fascinating topic that blends astronomy, astrobiology, technology, history – and thoughts about the future of human civilization. Chris and I had a blast preparing for the talk, which was attended by a great crowd in the University of Arizona’s Centennial Hall. The lecture was recorded and is available on YouTube.
