The shock wave blew in an estimated 100,000 square meters (more than 1 million square feet) of glass, according to city officials, who said 3,000 buildings in the city were damaged. At one zinc factory, part of the roof collapsed.
Infrasound data collected by a network designed to watch for nuclear weapons testing suggests that today’s blast released hundreds of kilotonnes of energy. That would make it far more powerful than the nuclear weapon tested by North Korea just days ago and the largest rock crashing on the planet since a meteor broke up over Siberia’s Tunguska river in 1908.
This reasonably large chunk of rock was moving faster than the speed of sound, maybe 20,000 miles per hour. It made a sonic boom in the atmosphere, and that hit buildings and shattered windows. That is what seems to have caused the injuries.