A billionaire who made early punts on Twitter and Facebook is ploughing a fortune into finding intelligent alien life. Yuri Milner will fund work by SETI researchers for the next decade – allowing them to use the world’s biggest telescopes to hunt for ET from 2016. Celebrated British scientist Stephen Hawking is among those to have endorsed the project, according to the Wall Street Journal. But the question remains will the aliens tweet their existence or friend the human race…