Astronaut warns: 'Asteroid hits Earth' catastrophe not so far-fetched at all

The chance of a city-killing asteroid striking Earth is higher than scientists previously believed, according to a non-profit group of asteroid hunters led by an ex-astronaut.

A global network that listens for nuclear weapons detonations detected 26 asteroids that exploded in Earth’s atmosphere from 2000 to 2013, data collected by the Comprehensive Nuclear Test Ban Treaty Organisation shows. The explosions include the February 15, 2013 impact over Chelyabinsk, Russia, which left more than 1,000 people injured by flying glass and debris.