former chief historian. >> astrobiology is a search for life in the universe. the search for origin of life here and elsewhere, the future of life, the implications if we find life. it is a very interim -- interdisciplinary subject. >> that is what brought you to the kluge center? we look particularly at the humanistic aspect of astrobiology, which is brought in itself. i looking at the impact on society if we find life. on how is your thinking human beings would respond to discovering intelligent life in the universe? >> the first thing you have to ask when you approach the subject is how you approach it at all. it is a far out subject. trying to figure out