Today (February 15th) is the first anniversary of the Chelyabinsk meteor impact, which produced about 30 times the energy of the Hiroshima atomic bomb. The shock wave damaged 7,200 buildings in six cities. At least 1,491 people were injured, mostly from broken glass from windows.
Perhaps in part because of the meteor strike, space agencies from around the world are establishing a group to help coordinate a response to any threatening asteroids in the future. The risk of another similar impact is not negligible. For example, 2000 SG344 is estimated to be over five times the mass of the Chelyabinsk meteor, and has a 1 in 417 chance of impact with Earth between 2069 and 2113.
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