Hazardous asteroids are 10 times more likely to hit Earth than previously thought, according to new research by Peter Brown of the University of Western Ontario. The physicist crunched 20 years’ worth of data on meteor airbursts instead of using only telescopic surveys and lunar-crater data to make the new assessment. He also studied videos from last year’s blast in Chelyabinsk, Russia. Here’s what the threat looks like.
The Asteroid Threat, Visualized