FASTER, PLEASE: Inside a Billionaire’s New Interstellar Mission: Yuri Milner is spending $100 million on a probe that could travel to Alpha Centauri within a generation—and he’s recruited Mark Zuckerberg and Stephen Hawking to help. “Milner’s Starshot initiative dwarfs all previous investments in interstellar travel. In 2012, DARPA announced its own “100 Year Starship” project, to much fanfare—but its budget was only $1 million, and perhaps for good reason. At the time, most interstellar mission designs were theoretical to the point of fantasy, or they were too expensive to pursue. Some had price tags in the trillions.”

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