A Space Laser Designed To Vaporize Dangerous Asteroids

A Space Laser Designed To Vaporize Dangerous Asteroids | Popular Science: "DE-STAR is designed to vaporize or divert asteroids that threaten Earth. This isn’t science fiction—I build things that have to work in practice. DE-STAR stands for Directed Energy Solar Targeting of Asteroids and exploRation. It looks like an open matchbook with lasers on one flap and a photovoltaic panel for power from sunlight on the other. By synchronizing the laser beams, we can create a phased array, which produces a steerable 70-gigawatt beam."