Close Advertising Why Have We Not Found Any Aliens? – with Keith Cooper After six decades of examining signals from space, why have we yet to discover evidence of extra-terrestrial life? Keith’s book “The … UFO and Alien Hoaxes alien life aliens Astronomy contact drake equation extra terrestrial extraterrestrial Fermi fermi paradox first contact intelligent life keith cooper lecture Ri Royal Institution SETI talk universe 12862 views 0 / 0
