As three times Oscar winner Steven Spielberg ’s latest film Disclosure Day rakes in £70 million worldwide in its first week, the master moviemaker has something of his own to divulge. While the notion of alien life has long provided him with a rich source of material, ever since his introduction to the wonders of the cosmos, as a boy he has strongly suspected we are not alone. He says: “It made me start to imagine what could lie beyond the stars, what could be circling the stars, you know, and