The video is based on new data from a network of sensors around the globe that is designed to detect nuclear detonations and is operated by the Nuclear Test Ban Treaty Organization. Between 2000 and 2013, these instruments detected 26 explosions on the planet ranging in energy from 1 to 600 kilotons, all caused by asteroid impacts, B612 Foundation officials said. For comparison, the nuclear bomb that flattened Hiroshima in 1945 burst with the energy of 15 kilotons.
Many of these asteroid collisions go unnoticed because they explode too high up in the atmosphere to cause damage on the ground. What's more, these impacts often occur above remote parts of the ocean. But as the new animation shows, sometimes a powerful collision occurs over an area heavily populated by humans. A throbbing red dot over Chelyabinsk, Russia, marks the spot where a 600-kiloton meteor impact occurred in February 2013, damaging hundreds of buildings and injuring more than 1,000 people.