A conversation with New Horizons principal investigator Alan Stern and astrobiologist David Grinspoon about their new book, Chasing New Horizons: Inside the Epic First Mission to Pluto. Stern and Grinspoon will share the upclose, inside story of one of the greatest space exploration projects of our time and explore the sheer human ingenuity it took to design, build, and fly this unparalleled mission.