Stephen Hawking, Yuri Milner and Mark Zuckerberg reveal $100m Starshot alien-hunting mission(4/8)

This illustration shows the “Breakthrough Starshot” project will rely on tiny so-called 'nanocraft' flying on sails, similar to the one illustrated, pushed by beams of light. Each of these tiny craft will carry cameras and a built in GPS. (Photo provided to China News Service)