Is there life out there? It's one question that has fascinated humankind since the beginning of time.
Senior astronomer Seth Shostak has devoted his life to SETI – the search for extraterrestrial intelligence. He is currently Director of the Center for SETI Research in Mountain View, California and is guest speaker at the Aoraki Mackenzie Starlight Festival in Twizel, 9-11 October 2015.
Seth talks with Wallace Chapman.