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NEW YORK, NEW YORK - APRIL 12: Scientist and investor Yuri Milner (L) speaks during the New Space Exploration Initiative 'Breakthrough Starshot' Announcement at One World Observatory on April 12, 2016 in New York City. (Photo by Jemal Countess/Getty Images)

NEW YORK, NEW YORK - APRIL 12:  Scientist and investor Yuri Milner (L) speaks during the New Space Exploration Initiative 'Breakthrough Starshot' Announcement at One World Observatory on April 12, 2016 in New York City.  (Photo by Jemal Countess/Getty Images)