Science Weekly: Seth Shostak, alien hunter

Seth Shostak , senior astronomer at Seti (the search for extraterrestrial intelligence) , discusses the latest developments in the project. The topics covered in this extended interview include what form signals from an alien civilisation would take, what ET might look like, the day Seti astronomers thought they had made contact, and what a confirmed signal would mean for planet Earth. Post your comments below. Join our Facebook group . Listen back through our archive . Follow the podcast on our Science Weekly Twitter feed and receive updates on all breaking science news stories from Guardian Science . Subscribe free via iTunes to ensure every episode gets delivered. (Here is the non-iTunes URL feed ).