Stephen Hawking Helps Launch Project 'Starshot' for Interstellar Space Exploration

The famed cosmologist, along with a group of scientists and billionaire investor Yuri Milner, unveiled an ambitious new $100 million project today (April 12) called Breakthrough Starshot, which aims to build the prototype for a tiny, light-propelled robotic spacecraft that could visit the nearby star Alpha Centauri after a journey of just 20 years. "The limit that confronts us now is the great void between us and the stars, but now we can transcend it," Hawking said today during a news conferenc