Lord Martin Rees on Humanity's Unique Place in the Cosmos
Australian Broadcasting Corporation - Melbourne University
It's famously called the Final Frontier, and thanks to rapidly developing technology we now know more about the outer reaches of our galaxy than ever. But that leaves unknowns.Does the universe have any limits? Are there any other earth-like planets out there? And the big one, are we alone?Addressing the University of Melbourne recently, Britain's Astronomer Royal, Lord Martin Rees, reports on the latest research.