The Watchers-3/5/13, Adonai

The Chelyabinsk meteor exploded in the atmosphere over Russia at approximately 9:20 am local time on February 15, 2013. The meteor flew out of the blue, literally from the direction of the Sun where no telescope could see it, and took everyone by surprise. The blast caused significant damage in the city, breaking thousands of windows and injuring more than 1,000 people.

But, from scientific side, a spectacular signals from the blast waves were recorded by a network of seismographic stations, used to study earthquakes and Earth’s deep interior. While thousands of earthquakes around the globe are recorded by seismometers, signals from large meteor impacts are far less common.