4K Aliens: The Big Think (2016) online Year: 2016 Country: UK Director:Thomas Hewitson Stars: Peter Capaldi, Martin Rees Stars: Peter Capaldi, Martin Rees Genre: Documentary / New Movie Professor Martin Rees discusses the modern search for extra-terrestrials, and the theory that our idea of alien life is all wrong: that it's not organic life we should look for out there, but machines. Watch Aliens: The Big Think (2016) online