Using a giant set of lasers to catapult thousands of miniature spacecraft 25 trillion miles to the Alpha Centauri star system to search for alien life may sound like the stuff of science fiction. But Internet entrepreneur and science philanthropist Yuri Milner, in collaboration with renowned cosmologist Stephen Hawking and Facebook CEO Mark Zuckerberg, is placing a $100-million bet that he can turn this into science reality within a generation.
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