“There is a popular misconception that asteroid impacts are extraordinarily rare … that's incorrect,” said former astronaut Ed Lu, who now heads the California-based B612 Foundation. The global network that listens for nuclear weapons detonations detected ...

“There is a popular misconception that asteroid impacts are extraordinarily rare … that's incorrect,” said former astronaut Ed Lu, who now heads the California-based B612 Foundation. The global network that listens for nuclear weapons detonations detected ...